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Head-to-head
Audi A4 vs Mercedes-Benz C-Class
Two badge rivals with different ownership quirks.
Specs & ownership
| Spec | Audi A4 | Mercedes-Benz C-Class |
|---|---|---|
| Years | 2016–2024 | 2014–2024 |
| Type | Saloon | Saloon |
| Engine (typical) | 2.0 TDI | 2.0 Diesel |
| Power | 150–190 hp | 150–510 hp |
| Fuel | Diesel | Diesel |
| Economy | 50–60 mpg | 45–60 mpg |
| 0–60 | 8.5–12.5 sec 0–60 mph | 8.5–12.5 sec 0–60 mph |
| Boot | 480–965 litres | 455–1,480 litres |
| Insurance group | Typically groups 12–28, depending on trim and power | Typically groups 12–28, depending on trim and power |
| Road tax (indicative) | Depends on first registration date, CO₂ band and fuel type — confirm on GOV.UK | Depends on first registration date, CO₂ band and fuel type — confirm on GOV.UK |
| Running costs / yr | ~£2,006–£2,952 / year | ~£2,062–£3,056 / year |
| Oil | Often VW 504/507 or Audi equivalent LongLife — match the exact approval | Low-SAPS 5W-30 C3 (or maker approval) for most modern diesels with DPF |
| Tyre pressure | Often ~32–38 PSI cold — door sticker is law for loading | Often ~32–38 PSI cold — door sticker is law for loading |
| ULEZ | Most post-2015 Euro 6 diesels are ULEZ compliant — still check the plate on TfL | Older diesels often charge in ULEZ — check the registration on TfL before buying |
| Common fault #1 | Oil leaks / timing chain on some TFSI | Electronics / battery drain |
| Best for | Company-car and premium estate buyers. | Premium saloon/estate buyers. |
Audi A4 — watch for
- Oil leaks / timing chain on some TFSI
- S tronic service neglect
- Carbon build-up on petrols
Running costs ~£2,006–£2,952 / year
Mercedes-Benz C-Class — watch for
- Electronics / battery drain
- Oil leaks
- Air-spring failure if fitted
Running costs ~£2,062–£3,056 / year