Which signals, which makes, which market.
CarConnective reads vehicles directly through owner-consented OEM APIs — no dongles, no OBD hardware. The matrix below shows exactly which signals are available for which makes in the US and UK, so you know precisely what you're buying. We expand it every time an OEM opens a new endpoint.
What each column means.
Signal availability is determined by what each OEM exposes via their API — not by what is technically possible on the vehicle. Where a signal is partial, it varies by model generation or trim within that make.
Odometer
Verified, software-read mileage — available across nearly every connected make on both US and UK markets.
Oil Life %
Remaining oil-life percentage — the primary service trigger for ICE vehicles. Broadly available on US market; not widely exposed by European OEM APIs.
Tire Pressure
Per-tire TPMS readings. Available on most connected makes; a subset of OEMs do not expose individual tire pressure via their API.
Fuel Level
Tank percentage. Available on ICE and hybrid vehicles across the majority of supported makes in both markets.
Battery & Charge
State of charge, estimated range, charge status, and — for select OEMs — charging session details (voltage, amperage, wattage). Available on every connected EV and phev.
Diagnostics (DTC)
Live fault codes read the moment they trip. Available in the US on GM brands (Chevrolet, Buick, Cadillac, GMC), Stellantis/FCA, and Nissan. In the UK: Jaguar, Land Rover, Polestar, and a limited subset of Hyundai, Alfa Romeo, and Fiat.
Location
Last-known vehicle coordinates, owner-consented. Available broadly across connected makes in both markets.
Service History
OEM service records via API. Currently available in the US market on Ford, Lincoln, Toyota, Lexus, Mazda, and Volkswagen. Not available in the UK.
Every make. Every signal. No surprises.
Select your market below. Where a make has a footnote number, additional context appears beneath the table.
| Make | OdometerOdometer | Oil Life %Oil Life | Tire PressureTire PSI | Fuel LevelFuel | Battery & ChargeBattery | Diagnostics (DTC)DTCs | LocationLocation | Service HistoryHistory |
|---|---|---|---|---|---|---|---|---|
| TeslaEV1 | — | — | — | — | — | |||
| ChevroletGM | EV | — | ||||||
| BuickGM | — | — | ||||||
| CadillacGM | EV | — | ||||||
| GMCGM | — | — | ||||||
| FordFord2 | EV | — | ||||||
| LincolnFord | EV | — | ||||||
| JeepStellantis | — | — | ||||||
| RAMStellantis | — | — | ||||||
| ChryslerStellantis | — | — | ||||||
| DodgeStellantis | — | — | ||||||
| Alfa RomeoStellantis | — | — | ||||||
| FiatStellantis | EV | — | ||||||
| ToyotaToyota | EV | — | ||||||
| LexusToyota | EV | — | ||||||
| MazdaToyota3 | — | — | ||||||
| NissanNissan4 | EV | — | ||||||
| VolkswagenVW Group | — | EV | — | |||||
| AudiVW Group | — | EV | — | — | ||||
| BMWBMW Group | — | EV | — | — | ||||
| MINIBMW Group | — | EV | — | — | ||||
| Mercedes-BenzMercedes | — | EV | — | — | ||||
| HondaHonda | — | EV | — | — | ||||
| HyundaiHyundai | — | EV | — | — | ||||
| KiaHyundai | — | EV | — | — | ||||
| SubaruSubaru | — | — | — | — | ||||
| VolvoVolvo | — | EV | — | — | ||||
| RivianEV5 | — | — | — | — | — |
- Requires Virtual Key setup for commands. Most comprehensive EV signal set available.
- Service history available via OEM API. DTCs not available; oil-life threshold is primary service trigger.
- Mazda service history available via OEM API.
- LEAF EV signals are among the most complete in the platform.
- Bluetooth pairing required for commands.
DTCs are targeted, not universal.
Diagnostic trouble codes require the OEM to expose fault data via their API — something only a minority currently do. In practice, oil-life thresholds and mileage velocity cover the bulk of service-drive intelligence for the makes that don't expose DTCs directly.
GM, Stellantis & Nissan
Live fault codes confirmed on Chevrolet, Buick, Cadillac, GMC, Jeep, RAM, Chrysler, Dodge, Alfa Romeo, and Fiat (Stellantis/FCA group), and Nissan — the three OEM groups that currently expose DTC data via their consumer APIs.
JLR, Polestar & selected Stellantis
Confirmed on Jaguar, Land Rover, and Polestar. Limited diagnostic data on select Hyundai, Alfa Romeo, and Fiat models. UK OEM API coverage for fault codes is narrower than the US — we flag this clearly and expand it as APIs open.
The customer connects their car.
Every reading in the matrix above is accessed through an explicit owner-consent flow — the same pattern used to link a bank account. The customer sees every permission, per vehicle, and can disconnect in one tap. No OEM credentials are stored. Nothing is installed in the vehicle. If the owner revokes consent, reads stop immediately.
- Telemetry signals explicitly authorized by the owner
- Only the signals listed in the matrix above
- Nothing from the cabin, contacts, or communications
- Owner PII beyond what the relationship already holds
- Anything after the owner disconnects
- Signals the owner has not explicitly authorized
Watch signals stream in from a live vehicle.
We'll connect a real car in your demo — you see the signals land on the customer record and watch the actions fire. Then we map coverage across your actual parc.