OBD2 diagnostics for Mercedes-Benz

What Final OBD reads and does on Mercedes-Benz cars. The basics work on any car with OBD2; the rest depends on what each control unit answers, and here is what the app knows about the make and its 46 models.

What there is for Mercedes-Benz

Figures for the whole make. On your car the app shows what its control units answer, no more and no less. The needle shows which version each feature is in.

Free
Gauges and engine faults
Standard OBD live data and engine faults explained, free with Free.
Pro
Faults from every control unit
Engine, gearbox, ABS, airbag, body and the rest, explained, with how the car was running when they happened, and cleared once fixed. 5,762 codes specific to the family, on top of the generic ones.
Pro
Roadworthiness verdict
What the Spanish ITV test centre reads through the OBD socket, judged by its official manual: pass, fail or something still to read.
Pro
Make specific data
1,130 readings that standard OBD doesn’t give and that the make stores its own way, depending on each model.
Pro
Mileage check
The mileage stored in the control units, next to the dashboard figure. If one of them holds more, it’s the classic sign of a clocked car.

Mercedes-Benz models

Each model with its years and engines, and what can be done on it. A yes means the app has it for that model; on your car it shows up if the control unit answers.

Mercedes-Benz46 models, 1,130 make-specific readingsDashboard: yesInspection: yesFaults ++: yesAdaptations: noService: noApps: noMake data: yes

Mercedes-Benz models
Model	Dashboard	Inspection	Faults ++	Adaptations	Service	Apps	Make data
A 1801997 to 2018	yes	yes	yes	no	no	no	yes
AMG A 452015 onwards	yes	yes	yes	no	no	no	yes
AMG GT2015 onwards	yes	yes	yes	no	no	no	yes
any model (through the engine ECU)W168, diesel E350, diesel W164 ML300 cdi 3l, diesel W203 cdi, diesel W204 180CDI 200CDI 220CDI 250CDI 350CDI	yes	yes	yes	no	no	no	yes
C Class	yes	yes	yes	no	no	no	yes
Citan2012 onwards	yes	yes	yes	no	no	no	yes
CLA2013 onwards	yes	yes	yes	no	no	no	yes
CLA 2002013 onwards	yes	yes	yes	no	no	no	yes
CLA Class2013 onwards	yes	yes	yes	no	no	no	yes
Clase A1997 onwards	yes	yes	yes	no	no	no	yes
Clase B2005 onwards	yes	yes	yes	no	no	no	yes
Clase C1993 onwards	yes	yes	yes	no	no	no	yes
Clase E1993 onwards	yes	yes	yes	no	no	no	yes
Clase G1979 onwards	yes	yes	yes	no	no	no	yes
Clase R2005 to 2013	yes	yes	yes	no	no	no	yes
Clase S1972 onwards	yes	yes	yes	no	no	no	yes
Clase T2022 onwards	yes	yes	yes	no	no	no	yes
Clase V2014 onwards	yes	yes	yes	no	no	no	yes
Clase X2017 to 2020	yes	yes	yes	no	no	no	yes
CLK1997 to 2010	yes	yes	yes	no	no	no	yes
CLS2004 to 2023	yes	yes	yes	no	no	no	yes
E Class1993 to 2023. Electric (G580)	yes	yes	yes	no	no	no	yes
EQA2021 onwards	yes	yes	yes	no	no	no	yes
EQB2021 to 2026	yes	yes	yes	no	no	no	yes
EQC2019 to 2024	yes	yes	yes	no	no	no	yes
EQE2022 onwards	yes	yes	yes	no	no	no	yes
EQS2021 onwards	yes	yes	yes	no	no	no	yes
G Class1979 onwards	yes	yes	yes	no	no	no	yes
GL2006 to 2015	yes	yes	yes	no	no	no	yes
GLA2013 onwards	yes	yes	yes	no	no	no	yes
GLB2019 onwards	yes	yes	yes	no	no	no	yes
GLB 2502019 onwards	yes	yes	yes	no	no	no	yes
GLC2015 onwards	yes	yes	yes	no	no	no	yes
GLC Class2015 onwards	yes	yes	yes	no	no	no	yes
GLE2015 onwards	yes	yes	yes	no	no	no	yes
GLK2008 to 2015. 3.5, diesel (220 cdi)	yes	yes	yes	no	no	no	yes
GLS2015 onwards	yes	yes	yes	no	no	no	yes
ML1997 to 2015. 3.5	yes	yes	yes	no	no	no	yes
S Class1972 onwards	yes	yes	yes	no	no	no	yes
SL1954 onwards	yes	yes	yes	no	no	no	yes
SLC2016 to 2020	yes	yes	yes	no	no	no	yes
SLK1996 to 2016	yes	yes	yes	no	no	no	yes
Sprinter1995 onwards. 3.0 diesel	yes	yes	yes	no	no	no	yes
Vaneo2002 to 2005	yes	yes	yes	no	no	no	yes
Viano2003 to 2014	yes	yes	yes	no	no	no	yes
Vito1996 onwards	yes	yes	yes	no	no	no	yes

Part of the Mercedes-Benz / smart family. The figures are for the whole family; on each car the app shows whatever its control units answer.

The security gateway

Some recent models of this make have a security gateway so that only the manufacturer’s tools can write to the control units. On those cars Final OBD reads everything, but nothing can be changed.

Can I clear the fault codes on my Mercedes-Benz?

Yes, with Pro: it reads and clears the faults in every control unit that answers, not just the engine. Clear them once the fault is fixed; if it’s still there, it comes back. On models with a security gateway they are read all the same, but the car may not let you clear them.

Can I reset the service light or do the maintenance on my Mercedes-Benz?

Not yet: for this make the app doesn’t have service functions so far. It does read faults from every control unit, live data and the roadworthiness check.

Which OBD2 adapter do I need?

Any ELM327 type will do for the basics. For every control unit and the Workshop features, a good one, like a vLinker or an OBDLink. It’s all in the adapter guide.

Does it help with the roadworthiness test?

Yes, for the OBD part. It reads through the socket what the Spanish ITV test centre reads and tells you whether you’d pass under its official manual. Full details in the ITV and OBD guide.

Try it on your Mercedes-Benz

Start for free with Free and demo mode. If you like it, move up to Pro or Workshop with a single payment.

Coming soon

Mid to late October 2026

If you want to try it in your car before anyone else, send us your email and we will add you as a tester.

info@finalobd.com

OBD2 diagnostics for Mercedes-Benz

What there is for Mercedes-Benz

Gauges and engine faults

Faults from every control unit

Roadworthiness verdict

Make specific data

Mileage check

Mercedes-Benz models

The security gateway

Try it on your Mercedes-Benz