BMW 1 Series (F40)
Tachwire reads the most from a BMW: it was built and driven on them. Other makes are being added one by one, and we only call a reading working once we’ve seen it arrive in a real drive. Most other cars from 2008 on (CAN) get the standard readings.
Every reading, by system: AFR, knock, oil, gearbox, hybrid, filter ↓Model, body code, engine or year. We never ask for a VIN.
- Confirmed Every reading in green arrived in drive logs of this version.
- Engine already driven The engine has been driven with this profile in another model, not this version yet.
- No drives yet A profile is ready; the first drive will show which readings arrive.
- Standard readings only Revs, speed, coolant, intake air, throttle and engine load — if the car reports them.
Already driven with Tachwire
BMW X5 45eG05 · 2018–2026Blue Ridge Mountain · launch colour383 drives
BMW X6 40iG06 · 2019–2026Isle of Man Green · launch colour217 drives
BMW 3 Series 316iF30 · 2012–2019Mediterranean Blue · launch colour52 drives
BMW 5 Series 530iG30 · 2016–2024Phytonic Blue · launch colour50 drives
BMW X3 20dG01 · 2017–2024Sophisto Grey30 drives
BMW 6 Series 640dF12 · 2011–2018Mediterranean Blue20 drivesOr pick step by step
Already driven with Tachwire
BMW26 confirmed versionsAudi1 confirmed versionsMazda1 confirmed versionsMINI1 confirmed versionsProfiles ready, no drives yet
AcuraChryslerDodgeFordHondaJaguarJeepLand RoverLexusMercedes-BenzPorscheRAMSEAT / CUPRAToyotaVolkswagenŠkodaStandard readings only
AlpineRenaultAll models by make
Not on this page. Your car still gets the standard OBD readings. Which ones ↓
Driven with Tachwire. Every reading under “Shows” was seen in a real drive log.
The app recognises the car and asks it for more than the standard set. Until a drive log shows a reading arriving, we don’t call it working.
The readings most cars from 2008 on (CAN) can give. What arrives depends on the car.
“Power and torque” under Shows is the engine unit’s own torque, and power as that torque × revs, read while driving — not a dyno figure; a tuned engine reads above the brochure.
How we check a car
Only by a real drive log: a drive over Bluetooth, on the move, of a car whose VIN names that model — never the simulator or the demo.
A reading counts once it has arrived in such a drive with plausible values. Until then the page says “asked for”, not “working”.
A make’s or a model’s profile stays a trial until its first drive log. New cars are proven by the logs drivers choose to send from the app.
Confirmed
Audi
Confirmed
Audi is recognised from the VIN. The A3 (8Y and 8V) and the Q2 get a trial profile for the dual-clutch gearbox and the engine’s own readings; on the A3 (8Y) drives have already shown it working. The Q3, TT, A4, A5, Q5, A6 and A7 get a trial profile that reads the engine, gearbox, tyre pressures, 12 V battery and service interval from the car’s own units once each unit names its family. The RS 3 gets the standard readings.
A3 8Y
Gearbox temperature, clutches and gear from the dual-clutch gearbox. The engine’s readings come where its unit names a family the app knows; AdBlue on the diesels. The service interval on the León 4 and the A3 (8Y) only.
A3 8V, Q2 GA
not yet seen in a drive
Gearbox temperature, clutches and gear from the dual-clutch gearbox. The engine’s readings come where its unit names a family the app knows; AdBlue on the diesels. The service interval on the León 4 and the A3 (8Y) only.
Q3 2025, F3, TT 8S
not yet seen in a drive
Read only where the car’s own engine, gearbox, tyre or battery unit names a family the app knows; a reading its family doesn’t have shows a dash. AdBlue on the diesels, clutches with the dual-clutch gearbox. The Passat B8, Touran, Octavia 3 and Superb 3 from model year 2016, the first with CarPlay. A car that answers only on 29-bit CAN, as some from 2024 do, gets the standard readings for now.
A4 B9, A5 F5, A6/A7 C8, Q5 FY
not yet seen in a drive
Read only where the car’s own engine, gearbox, tyre or battery unit names a family the app knows; a reading its family doesn’t have shows a dash. AdBlue on the diesels. The RS 6 and RS 7 are read by what their own units say.
Other Audi
BMW
Confirmed
G-series and F-series, recognised from the VIN. The fullest data: it comes from the car’s own engine and gearbox units.
G-series petrol
G-series plug-in hybrid
G-series diesel
G-series and i electric
not yet seen in a drive
F-series petrol
Switch the ignition on before you start the engine. The app identifies the gearbox on its own. A six-speed manual: no gearbox unit answers on two drives with the engine running. A dual-clutch M DCT: its gearbox unit answers, if only to turn a reading down — on the M2 Competition the gear then comes from the body unit. Until the app knows the gearbox, the gear tile shows a dash.
F-series diesel
Oil pressure on B47 engines only: the N57’s engine unit doesn’t report it.
G-series
F-series
A body code someone has driven with the app.
Mazda
Confirmed
Mazda from 2016 is recognised from the VIN. The models named below get a trial profile for engine oil and the automatic gearbox; the rest get the standard readings. On the Mazda3 (BP) drives have already shown it working.
Mazda3 BP
CX-3, CX-5, CX-9, CX-30, CX-50, CX-90, Mazda3, Mazda6, MX-5
not yet seen in a drive
Gearbox temperature with the 6-speed automatic; the CX-90’s 8-speed automatic gives the standard readings only.
BT-50, CX-8, CX-60, CX-70, CX-80, Mazda2, MX-30
MINI
Confirmed
MINI 2014–2024 (F54–F60), recognised from the VIN. They share engine units with the F-series BMW, so the app asks for the same readings; the first MINI drive, a John Cooper Works Clubman, confirmed most of them. The electric Cooper SE gets its battery’s charge, voltage, current and temperature.
Petrol
Gear from the automatic and dual-clutch gearboxes; a manual gearbox doesn’t report it.
Diesel
not yet seen in a drive
The engine by the standard readings, plus oil pressure from the engine unit.
Electric
not yet seen in a drive
MINI from 2024 is recognised from the VIN and gets the standard readings. MINI built before 2014 is not covered.
MINI F54–F60
A body code someone has driven with the app.
No drives yet
Acura
No drives yet
Acura is recognised from the VIN and read as a Honda: the same trial profile on 29-bit CAN. The Integra, ILX, RDX, MDX and TLX are also recognised by name.
Every model
not yet seen in a drive
No oil temperature: these engines don’t report one we can stand behind, and the tile shows a dash rather than an estimate.
Bentley
No drives yet
Bentley is recognised from the VIN, though not the model. Every Bentley gets the VW Group’s trial profile for cars with CarPlay: the engine, gearbox, tyre pressures, 12 V battery and service interval from the car’s own units, once each unit names its family.
Every model
not yet seen in a drive
The VIN doesn’t name the model: every car gets the same trial profile, read only where its own engine, gearbox, tyre or battery unit names a family the app knows. A reading its family doesn’t have shows a dash.
Chrysler
No drives yet
The 300 (2017–2023) and the Pacifica and Voyager (2017 on), recognised from the VIN. They get a trial profile: gearbox temperature, oil temperature and oil pressure, and the gear on the 300.
300 LX, Pacifica / Voyager RU
not yet seen in a drive
Gear on the 300 only: the Pacifica’s gearbox doesn’t report it.
Dodge
No drives yet
The Challenger, Charger (2017–2023) and Durango (2018 on), recognised from the VIN. They get a trial profile: gearbox temperature and gear, oil temperature and oil pressure. The Charger from 2024 and the Hornet get the standard readings.
Challenger LA, Charger LD, Durango WD
not yet seen in a drive
Other Dodge
Ford
No drives yet
The Ranger (2011 on, the US Ranger from 2019), the Everest (2015 on), the Mustang (2015 on) and, from 2015, the F-150, Bronco, Bronco Sport, Maverick, Explorer, Expedition, Escape, Edge, Transit and US Focus are recognised from the VIN down to the generation, and so are the Kuga and Focus built in Taiwan. They get trial profiles: gearbox temperature and gear, the 12 V battery’s charge, tyre pressures on most of them, and model by model the oil pressure, the boost target and, on the diesels, the particulate filter and exhaust temperature. The electric Fords (Mustang Mach-E, F-150 Lightning, E-Transit) get the standard readings, and so do Fords with a European VIN, such as the Kuga, Puma and Focus built in Europe, which the app does not recognise yet.
Everest, Ranger, Ranger PHEV, Ranger Raptor
not yet seen in a drive
The particulate filter on the diesels, the exhaust temperature on the diesels from 2022. Tyre pressures on the Ranger, not the Everest. The boost target on the Ranger and Everest before 2022 and the US Ranger, the oil pressure on the US Ranger.
Mustang S550, S650, Mustang Shelby GT350 S550, Mustang Shelby GT500 S550
not yet seen in a drive
Gearbox temperature and gear with the automatic only; with a manual the gear tile shows a dash. No oil temperature: the Mustang’s engine unit doesn’t report one.
Bronco, Bronco Sport, Edge, Escape, Expedition, Explorer, F-150, Focus, Kuga / Focus, Maverick, Transit
not yet seen in a drive
Recognised from North-American VINs from 2015 on, and the Kuga and Focus built in Taiwan (2021–2025). Gearbox temperature and gear with an automatic; the particulate filter and exhaust temperature on the Transit diesel; the boost target on the Expedition (2018–2024). The same Kuga, Focus or Transit built in Europe gets the standard readings for now.
Other Ford
Honda
No drives yet
Every Honda gets a trial profile: its units answer only on 29-bit CAN, so even the standard readings are asked that way. The Civic, Accord, CR-V and HR-V are also recognised by name.
CR-V RS, RW/RT, CR-V e:FCEV ZC8
not yet seen in a drive
Fuel in litres from the instrument cluster; on the hybrids, the high-voltage battery’s charge, temperature, voltage and current. No oil or gearbox temperature: the CR-V doesn’t report one we can stand behind.
Every model
not yet seen in a drive
High-voltage battery on the e:HEV hybrids; gearbox temperature on the Accord from 2018 and the Civic’s CVT.
No oil temperature: these engines don’t report one we can stand behind, and the tile shows a dash rather than an estimate.
Jaguar
No drives yet
Jaguar is recognised from the VIN down to the model line. The XE, XF, F-Type, F-Pace and E-Pace get the same trial profile as a Land Rover: oil and gearbox temperature, gear and the tyre pressures. The I-Pace gets one of its own: the high-voltage battery’s charge, temperature, voltage and current, and the tyre pressures.
E-Pace X540, F-Pace X761, F-Type X152, XE X760, XF X260
not yet seen in a drive
I-Pace X590
not yet seen in a drive
Jeep
No drives yet
The Wrangler (2018 on, the 4xe included), Gladiator and Grand Cherokee, recognised from the VIN. The Wrangler, Gladiator and Grand Cherokee WK2 get a trial profile: gearbox temperature and gear, oil temperature and oil pressure; the Grand Cherokee from 2021 and the Wagoneer, on 29-bit CAN, gearbox temperature and gear. The Cherokee, Compass and Renegade get the standard readings.
Gladiator JT, Grand Cherokee WK2, Wrangler 4xe JL, Wrangler JL
not yet seen in a drive
Grand Cherokee WL, Wagoneer WS
not yet seen in a drive
Cherokee KL, Compass MP, Renegade BU
Lamborghini
No drives yet
Lamborghini is recognised from the VIN, though not the model. Every Lamborghini gets the VW Group’s trial profile for cars with CarPlay: the engine, gearbox, tyre pressures, 12 V battery and service interval from the car’s own units, once each unit names its family.
Every model
not yet seen in a drive
The VIN doesn’t name the model: every car gets the same trial profile, read only where its own engine, gearbox, tyre or battery unit names a family the app knows. A reading its family doesn’t have shows a dash.
Land Rover
No drives yet
Land Rover is recognised from the VIN down to the model line, and for most petrol engines the engine. Every model gets a trial profile: oil temperature from the engine unit where the car doesn’t report it the standard way, gearbox temperature and gear, and the tyre pressures.
Defender L663, Discovery L462, Discovery Sport L550, Range Rover L405, L460, Range Rover Evoque L538, L551, Range Rover Sport L461, L494, Range Rover Velar L560
not yet seen in a drive
Lexus
No drives yet
Lexus is recognised from the VIN down to the generation. The GX (2024 on) and LX (2022 on) share the Land Cruiser’s units, the ES, NX, RX and TX the Camry’s and RAV4’s, and they get the same trial profiles: oil pressure, gearbox temperature where the gearbox reports it (a hybrid’s doesn’t) and the fuel in litres. Other Lexus models get the standard readings.
GX, LX
not yet seen in a drive
ES, NX, RX, TX
not yet seen in a drive
Gearbox temperature with the automatic and CVT gearboxes, not on the hybrids.
Other Lexus
Mercedes-Benz
No drives yet
Mercedes-Benz is recognised from the VIN down to the series. A car that answers on 11-bit CAN, as most built before the secure gateway do, gets a trial profile: oil and gearbox temperature and the fuel in litres. The series behind the secure gateway, from the C-Class 206 and the S-Class 223 on, and any car that answers on 29-bit CAN only, get the standard readings.
A-Class 176, 177, AMG GT 4-Door Coupé 290, AMG GT 190, B-Class 246, 247, C-Class 205, CLA 117, 118, CLS 218, 257, E-Class 213, E-Class Coupé / Cabriolet 238, G-Class 463, 465, GLA 156, 247, GLB 247, GLC 253, GLE 167, GLE / GLS 166, GLE Coupé 167, 292, GLS 167, S-Class 222, S-Class Coupé / Cabriolet 217, SL 231, SLC / SLK 172
not yet seen in a drive
Where the car answers on 11-bit CAN. Some of these series answer on 29-bit CAN from about 2019; those get the standard readings.
AMG GT 192, C-Class 206, CLA 174, CLE 236, E-Class 214, EQA 243, EQB 243, EQC 293, EQE 295, EQE SUV 294, EQS 297, EQS SUV 296, GLC 254, S-Class 223, SL 232
Porsche
No drives yet
Porsche is recognised from the VIN down to the generation. The models with CarPlay listed below get a trial profile: the tyre pressures, and model by model the gear, the oil temperature, the boost and its target and, on the Macan, the clutch temperature; the Taycan, its battery’s charge and the tyre pressures. Older models and the Macan Electric get the standard readings.
718 Boxster / Cayman 982, 911 991.2, 992, Cayenne 92A, E3, Macan 95B, Panamera 971, G3
not yet seen in a drive
Model by model, from the car’s own units: the gear on the 911 (991.2 and 992 to 2024) and the Panamera; the boost and its target on the 911 from 2024; the oil temperature on the 911 991.2 and the Macan; the boost target and clutch temperature on the Macan. Elsewhere the oil temperature and boost come with the standard readings where the engine reports them, and the gear tile shows a dash. Tyre pressures and temperatures on every model listed, by sensor.
Taycan J1.1, J1.2
not yet seen in a drive
The battery’s charge and voltage from its own unit and the tyre pressures, beside the standard readings.
911 991.1, Boxster / Cayman 981, Macan Electric, Panamera 970
RAM
No drives yet
The RAM 1500 (2018 on) and 2500/3500 (2019 on), recognised from the VIN down to the generation and engine. They get a trial profile: gearbox temperature and gear, and on the petrol engines oil temperature and oil pressure. The 1500 from 2025 is read on 29-bit CAN: gearbox temperature and gear. The Cummins diesel gets the standard readings and the gearbox.
1500 DS, DT, 2500 / 3500 DT HD, 2500 / 3500 Cummins DT HD
not yet seen in a drive
Oil temperature and pressure on the petrol engines only; the Cummins gets the standard readings and the gearbox. The 2500/3500 before 2019 gets the standard readings.
1500 DT 2025
not yet seen in a drive
Other RAM
SEAT / CUPRA
No drives yet
SEAT and CUPRA are recognised from the VIN. The León, Formentor, Ateca and Tarraco get a trial profile for the dual-clutch gearbox and the engine’s own readings; the Terramar, Ibiza and Arona one that reads the engine, gearbox, tyre pressures, 12 V battery and service interval from the car’s own units once each unit names its family.
CUPRA Formentor, León KL, SEAT León or Ateca 5F, SEAT Tarraco
not yet seen in a drive
Gearbox temperature, clutches and gear from the dual-clutch gearbox. The engine’s readings come where its unit names a family the app knows; AdBlue on the diesels. The service interval on the León 4 and the A3 (8Y) only.
CUPRA Terramar, SEAT Ateca, SEAT Ibiza / Arona
not yet seen in a drive
Read only where the car’s own engine, gearbox, tyre or battery unit names a family the app knows; a reading its family doesn’t have shows a dash. AdBlue on the diesels, clutches with the dual-clutch gearbox. The Passat B8, Touran, Octavia 3 and Superb 3 from model year 2016, the first with CarPlay. A car that answers only on 29-bit CAN, as some from 2024 do, gets the standard readings for now.
CUPRA Formentor from 2025
not yet seen in a drive
Heard on 29-bit CAN: the fuel in litres from the engine unit, and the engine’s other readings where its unit names a family the app knows. No gearbox readings.
Other SEAT and CUPRA
Toyota
No drives yet
The GR Supra (2019 on) has the same engine and gearbox units as a petrol G-series BMW, so the app reads it the same way. Toyota’s own cars are recognised from the VIN down to the generation, and the ones listed get trial profiles: oil pressure from the engine unit, gearbox temperature where the gearbox reports it (a hybrid’s doesn’t), the fuel in litres from the instrument cluster where it gives them. Other Toyotas get the standard readings.
GR Supra
not yet seen in a drive
The app identifies the six-speed manual on its own: no gearbox unit answers on two drives with the engine running. Until the gearbox has answered, the gear tile shows a dash.
RAV4 (XA50)
not yet seen in a drive
Land Cruiser (J300)
not yet seen in a drive
Petrol and diesel. On the diesel, the particulate filter and exhaust temperature where its engine reports them. A Japanese-market car that reports no VIN gets the standard readings.
Avalon, C-HR, Camry, Corolla, Corolla Cross, GR Corolla, Grand Highlander, Highlander, Sienna, Venza
not yet seen in a drive
Gearbox temperature with the automatic and CVT gearboxes, not on the hybrids.
4Runner, Land Cruiser, Sequoia, Tacoma, Tundra
not yet seen in a drive
The Tacoma built before 2024 gives the gearbox temperature only.
Fortuner, Hilux
not yet seen in a drive
On the diesels, the particulate filter and exhaust temperature where the engine reports them; the fuel as a percentage.
Other Toyota
GR Supra
Volkswagen
No drives yet
Volkswagen is recognised from the VIN. The Tiguan 2 and the T-Roc get a trial profile for the dual-clutch gearbox and the engine’s own readings; the Golf 7 and 8 get the gearbox’s once it answers as a dual-clutch one, and the Golf 8 the engine’s too. The Tiguan 3, Passat, Arteon, Tayron, Polo, T-Cross, Touran, Caddy, Multivan and the other models with CarPlay get a trial profile that reads the engine, gearbox, tyre pressures, 12 V battery and service interval from the car’s own units once each unit names its family. The Amarok from 2023 is read as a Ford Ranger.
T-Roc, Tiguan Mk2
not yet seen in a drive
Gearbox temperature, clutches and gear from the dual-clutch gearbox. The engine’s readings come where its unit names a family the app knows; AdBlue on the diesels. The service interval on the León 4 and the A3 (8Y) only.
Golf Mk7, Mk8
not yet seen in a drive
Gearbox temperature, clutches and gear with the dual-clutch gearbox only, once the gearbox answers as one; an automatic or a manual gets none of them. On the Golf 8, Octavia 4, Superb 4 and Kodiaq 2 the engine’s readings come where its unit names a family the app knows; AdBlue on the diesels.
Arteon, Atlas, Caddy Mk5, Crafter Mk2, Jetta / Sagitar BU, Multivan T7, Passat B8, B9, Polo Mk6, T-Cross, T-Roc Mk2, Taos, Tayron, Tiguan Mk2, Mk3, Touran
not yet seen in a drive
Read only where the car’s own engine, gearbox, tyre or battery unit names a family the app knows; a reading its family doesn’t have shows a dash. AdBlue on the diesels, clutches with the dual-clutch gearbox. The Passat B8, Touran, Octavia 3 and Superb 3 from model year 2016, the first with CarPlay. A car that answers only on 29-bit CAN, as some from 2024 do, gets the standard readings for now.
Amarok (Mk2)
not yet seen in a drive
The Amarok from 2023 is built by Ford alongside the Ranger and is read with the Ranger’s trial profile. The first Amarok gets the standard readings.
Other Volkswagen
Škoda
No drives yet
Škoda is recognised from the VIN. The Octavia, Superb, Kodiaq and Karoq get a trial profile for the dual-clutch gearbox once the gearbox answers as one, and the Octavia 4, Superb 4 and Kodiaq 2 the engine’s own readings too. The Scala, the Kamiq and some Octavia 3 and Superb 3 get a trial profile that reads the engine, gearbox, tyre pressures, 12 V battery and service interval from the car’s own units once each unit names its family.
Karoq, Kodiaq Mk2, Octavia NE, NX, Superb Mk3, Mk4
not yet seen in a drive
Gearbox temperature, clutches and gear with the dual-clutch gearbox only, once the gearbox answers as one; an automatic or a manual gets none of them. On the Golf 8, Octavia 4, Superb 4 and Kodiaq 2 the engine’s readings come where its unit names a family the app knows; AdBlue on the diesels.
Octavia Mk3, Scala / Kamiq, Superb Mk3
not yet seen in a drive
Read only where the car’s own engine, gearbox, tyre or battery unit names a family the app knows; a reading its family doesn’t have shows a dash. AdBlue on the diesels, clutches with the dual-clutch gearbox. The Passat B8, Touran, Octavia 3 and Superb 3 from model year 2016, the first with CarPlay. A car that answers only on 29-bit CAN, as some from 2024 do, gets the standard readings for now.
Other Škoda
Standard OBD
Most other cars from 2008 on (CAN)
Not listed? It most likely still works: most cars from 2008 on speak CAN on the OBD port and answer the standard requests.
Also recognised by name from the VIN: Renault, Dacia, Alpine, Kia
Never on standard OBD: gearbox, oil pressure, hybrid data. They live in the carmaker’s own units, which the app reads only on the makes above.
Tachwire is an independent app, not affiliated with, endorsed or sponsored by any carmaker. BMW, MINI, Audi, Volkswagen, Škoda, SEAT, CUPRA, Mazda, Honda, Acura, Toyota, GR Supra, Lexus, Ford, Porsche, Mercedes-Benz, RAM, Dodge, Jeep, Chrysler, Renault, Dacia, Alpine, Land Rover, Jaguar, Lamborghini, Bentley, Kia and other make and model names are trademarks of their respective owners, used here only to say which cars the app works with. CarPlay and iPhone are trademarks of Apple Inc.; Dragy is a trademark of its owner.
Every reading, by system
What Tachwire reads and where it comes from. Each mark names the cars it is asked of: confirmed where a drive log has shown it arriving, “no drives yet” where the app asks and no drive has shown it yet. What a car gives through standard OBD depends on the car.
Engine
Revs
From the engine unit, as often as the adapter allows.
Most cars from 2008 on (CAN)Coolant temperature
Counted down to READY while the engine warms up; a voice if it runs critically hot.
BMW G petrol · plug-in hybrid · dieselBMW F petrol · dieselMINIToyota GR SupraOther cars, if they report itPower and torque
The engine unit’s own torque figure, and power as that torque × revs. Read from the car, not measured on a dyno: a tuned engine shows more than the brochure.
BMW G petrol · plug-in hybrid · dieselBMW F petrolBMW F dieselMINIToyota GR SupraAudi · VW · Škoda · SEAT / CUPRALamborghini · BentleyOther cars, if they report itEngine load
How hard the engine is working, as the engine unit works it out.
Most cars from 2008 on (CAN)Throttle and pedal
Where your foot is, and how far the throttle has opened.
Most cars from 2008 on (CAN)Catalyst temperature
As the engine unit reports it; on many cars that is its own estimate, not a sensor.
Most cars from 2008 on (CAN)
Boost and air
Boost
Pressure in the intake above the outside air, from the engine’s own sensor.
BMW G petrol · plug-in hybrid · dieselBMW F petrol · dieselMINIToyota GR SupraPorscheOther cars, if they report itBoost target
The boost the engine unit is aiming for, beside the one measured.
Ford Ranger · Everest · VW AmarokFord F-150 · Bronco · Explorer · EscapePorscheIntercooler efficiency
On every pull, how much of the compressor’s heat the intercooler takes out — from the engine’s sensors before the compressor and after the intercooler.
BMW G petrol · plug-in hybridToyota GR SupraIntake and charge-air temperature
The air on its way into the engine.
Most cars from 2008 on (CAN)Outside air pressure and temperature
Boost is measured against the outside air pressure.
Most cars from 2008 on (CAN)
Mixture and ignition
AFR and λ
λ is what the wideband oxygen sensor before the catalyst measures: 1.0 is the ideal mixture, lower is rich, higher is lean. The AFR is λ × the fuel’s ratio, 14.7 : 1 for petrol, worked out on the phone. On the overrun the sensor tops out, so the tile reads “≥ 29.4” rather than a made-up number. On a tile, on the drive’s chart and under every run.
Not on BMW and MINI diesels: their engine units don’t report λ. A blend such as E85 is still shown against 14.7.
BMW G petrol · plug-in hybridBMW F petrolMINIToyota GR SupraOther cars, if they report itTarget λ
The mixture the engine unit is aiming for, beside the one measured.
Most cars from 2008 on (CAN)Timing pull (knock retard)
How far the engine pulls ignition back under load to stop knock, and each cylinder against the rest.
BMW G petrol · plug-in hybridToyota GR SupraIgnition advance
The spark timing the engine unit sets. Its dips at gear changes are not knock.
Most cars from 2008 on (CAN)Fuel trims
How much the engine unit corrects the fuel, short- and long-term.
Most cars from 2008 on (CAN)
Oil
Oil temperature
Counted down to READY while the engine warms up.
BMW G petrol · plug-in hybrid · dieselBMW F petrol · dieselMINIMazdaToyota GR SupraAudi · VW · Škoda · SEAT / CUPRARAM · Dodge · Jeep · ChryslerLand Rover · JaguarPorscheLamborghini · BentleyMercedes-BenzOther cars, if they report itOil pressure
Judged against revs: the pump holds it low at idle on purpose. A voice warns when it drops.
BMW G petrol · plug-in hybrid · dieselBMW F petrolMINIBMW F dieselToyota GR SupraToyota RAV4Toyota Land Cruiser 300Toyota Camry · Highlander · CorollaToyota Tundra · Tacoma · 4RunnerToyota Hilux · FortunerLexusAudi · VW · Škoda · SEAT / CUPRAFord Ranger · Everest · VW AmarokFord MustangRAM · Dodge · Jeep · ChryslerLamborghini · Bentley
Gearbox
Gearbox temperature
From the gearbox unit, against the line where it gets hot.
BMW G petrol · plug-in hybrid · dieselBMW F petrol · dieselMINIMazdaToyota GR SupraToyota RAV4Toyota Land Cruiser 300Toyota Camry · Highlander · CorollaToyota Tundra · Tacoma · 4RunnerToyota Hilux · FortunerLexusAudi · VW · Škoda · SEAT / CUPRAHonda · AcuraFord Ranger · Everest · VW AmarokFord F-150 · Bronco · Explorer · EscapeFord MustangRAM · Dodge · Jeep · ChryslerLand Rover · JaguarLamborghini · BentleyMercedes-BenzGear
The gear you’re in, up to 8th.
BMW G petrol · plug-in hybrid · dieselBMW F petrol · dieselAudi · VW · Škoda · SEAT / CUPRAMINIToyota GR SupraFord Ranger · Everest · VW AmarokFord F-150 · Bronco · Explorer · EscapeFord MustangRAM · Dodge · Jeep · ChryslerLand Rover · JaguarPorscheLamborghini · BentleyClutch temperatures
The dual-clutch gearbox’s clutches: both where the gearbox reports them, one where it reports one.
Audi · VW · Škoda · SEAT / CUPRAPorscheLamborghini · Bentley
Fuel and trip
Fuel left
In per cent, and in litres from the instrument cluster or your model’s own tank size.
BMW G petrol · plug-in hybrid · dieselBMW F petrol · dieselMINIToyota RAV4Toyota Land Cruiser 300Toyota Camry · Highlander · CorollaToyota Tundra · Tacoma · 4RunnerLexusAudi · VW · Škoda · SEAT / CUPRAHonda · AcuraMercedes-BenzOther cars, if they report itFuel consumption
Litres per hour, where the engine reports it.
Most cars from 2008 on (CAN)Fuel rail pressure
The pressure the fuel is injected at.
Most cars from 2008 on (CAN)Odometer
The car’s own mileage.
Most cars from 2008 on (CAN)
Battery and hybrid
12 V battery
The voltage of the car’s 12 V system, as the engine unit sees it; where the car’s own battery sensor reports it, the battery’s charge too.
BMW G petrol · plug-in hybrid · dieselAudi · VW · Škoda · SEAT / CUPRAFord Ranger · Everest · VW AmarokFord F-150 · Bronco · Explorer · EscapeFord MustangLamborghini · BentleyOther cars, if they report itE-motor
Its torque and revs, stator, rotor and coolant temperatures, and who is pulling: engine, e-motor or both.
BMW G plug-in hybridHigh-voltage battery
Charge, current, voltage and temperature, regeneration, and the electric share of every drive.
BMW G plug-in hybridBMW G electricMINIHonda · AcuraPorscheJaguar I-PaceInverter temperature
The power electronics between the battery and the e-motor.
BMW G plug-in hybridBMW G electric
Diesel
Particulate filter
How close the engine unit is to a regeneration, the soot in grams, the pressure drop across the filter, and whether it is regenerating now. On a petrol engine with a particulate filter, its soot and pressure drop.
BMW G dieselBMW F dieselBMW G petrol · plug-in hybridAudi · VW · Škoda · SEAT / CUPRAFord Ranger · Everest · VW AmarokFord F-150 · Bronco · Explorer · EscapeLamborghini · BentleyExhaust temperature
Before the filter, from the engine unit.
BMW G dieselFord Ranger · Everest · VW AmarokFord F-150 · Bronco · Explorer · EscapeAdBlue
The range it is good for and the litres left in the tank, from the engine unit.
BMW G dieselBMW F dieselAudi · VW · Škoda · SEAT / CUPRA
Tyres and service
Tyre pressures
Each wheel’s pressure from the car’s own tyre sensors, against the pressures set for the tyres; their temperatures where the car reports them.
BMW G petrol · plug-in hybrid · diesel · electricBMW F petrol · dieselMINIAudi · VW · Škoda · SEAT / CUPRAFord Ranger · Everest · VW AmarokFord F-150 · Bronco · Explorer · EscapeFord MustangPorscheLamborghini · BentleyService due
What the car itself says is due next — oil, brakes, inspection — in kilometres or by date.
BMW G petrol · plug-in hybrid · dieselAudi · VW · Škoda · SEAT / CUPRALamborghini · BentleyEngine oil level
From the engine’s electronic oil level sensor, where the car has one.
BMW G petrol · plug-in hybrid · dieselAudi · VW · Škoda · SEAT / CUPRALamborghini · Bentley
Movement
Speed
The car’s own speed, corrected on every drive against satellite speed from GPS, or from a Dragy in the TestFlight builds.
Most cars from 2008 on (CAN)Route and GPS speed
From the phone’s location. A drive log you send has the route removed.
iPhoneg-forces
Braking, acceleration and cornering from the phone’s motion sensors; the app learns which way is forward from the car’s speed.
iPhoneDragy
In the TestFlight builds: a Dragy DRG70 gives satellite speed for runs when it has a good fix.
Dragy
Laps and runs
Lap times
At a track’s start/finish line, from the app’s list of tracks or a line you set.
iPhoneRuns
0–100 and 100–200 km/h, ¼ to 1 mile; the AFR through each run where the car reports λ.
iPhoneDragy
Power and torque are the engine unit’s own figures, read from the car while you drive — not a dyno measurement, and a tuned engine reads above the brochure. Power the app can’t yet stand behind is dimmed in the app and kept out of records.
You’ll need a Bluetooth LE adapter
An iPhone talks only to Bluetooth LE adapters, not to classic Bluetooth or Wi-Fi ones. Driven on: OBDLink CX (the fastest), vLinker MC+ / FS, vLinker BM+, vLinker FD+, UniCarScan UCSI-2100, Veepeak BLE, Vgate iCar Pro BLE 4.0, OBDII Snowman, Rokodil ScanX.
All adapters we know ofDrive one of the cars with no drives yet?
Install Tachwire from the App Store, drive as usual and send the drive from More → Help the project. A drive usually shows us which readings arrive; this page changes once they do.
Where you drove isn’t sent: location is removed on the phone; only laps on a track keep their positions.
What will not work
BMW E-series and older: nothing from the car’s own units. At most the standard readings, and only where the OBD port speaks CAN, as on most E-series built from 2007.
MINI built before 2014, and the MINI generation from 2024.
Classic Bluetooth and Wi-Fi adapters, as above.
Cars without an OBD port, or whose port does not speak CAN: the app talks CAN only, and many cars built before 2008 do not.
Your car is here but something is missing? Send a drive from More → Help the project and write to support@tachwire.app with its code. That is how a reading gets confirmed.
How to send a drive