Cross-brand
Audi A6 vs Mercedes E-Class
Executive saloon comparison covering diesel emissions hardware, quattro, automatic gearboxes, electronics, suspension, and ownership budgets.
Audi A6
70
/ 100
Mercedes-Benz E-Class
73
/ 100
Best used buy
Mercedes-Benz E-Class
E-Class for comfort and broad specialist support; A6 when quattro is genuinely useful and drivetrain service is exceptionally well documented.
The better executive car is the one with the cleaner module scan and stronger gearbox, emissions, and suspension history. The Mercedes narrowly wins on comfort-led ownership logic.
Key differences
- A6 offers a restrained cabin and available quattro traction.
- E-Class emphasizes ride comfort and long-distance use.
- Both can carry expensive diesel emissions systems.
- Air suspension and option-heavy electronics raise risk sharply.
Buyer advice
- Scan every module, not only the engine ECU.
- Confirm gearbox fluid and differential service.
- Avoid complex specifications when the maintenance budget is tight.
Red flags
- AdBlue countdown
- Harsh shifts
- Air suspension sag
- MMI/COMAND faults
- Water ingress