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Head-to-head
BMW 3 Series vs Mercedes-Benz C-Class
Driver’s car vs comfort-first exec saloon.
BMW 3 Series
2.0 Diesel · ~£2,212–£3,456 / year
Mercedes-Benz C-Class
2.0 Diesel · ~£2,062–£3,056 / year
Specs & ownership
| Spec | BMW 3 Series | Mercedes-Benz C-Class |
|---|---|---|
| Years | 2012–2018 | 2014–2024 |
| Type | Saloon | Saloon |
| Engine (typical) | 2.0 Diesel | 2.0 Diesel |
| Power | 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 litres | 455–1,480 litres |
| Insurance group | Typically groups 23–34 | 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 | ~£2,212–£3,456 / year | ~£2,062–£3,056 / year |
| Oil | LL-01 / LL-04 or newer BMW Longlife grade for the engine code | Low-SAPS 5W-30 C3 (or maker approval) for most modern diesels with DPF |
| Tyre pressure | Typically ~32–39 PSI; many use run-flats | Often ~32–38 PSI cold — door sticker is law for loading |
| ULEZ | Older diesels often charge in ULEZ — check the registration on TfL before buying | Older diesels often charge in ULEZ — check the registration on TfL before buying |
| Common fault #1 | EGR cooler and DPF loading on diesel models | Electronics / battery drain |
| Best for | Motorway miles with a premium cabin. | Premium saloon/estate buyers. |
BMW 3 Series — watch for
- EGR cooler and DPF loading on diesel models
- Timing chain stretch on some N47 engines
- Control arm and bush wear affecting alignment
Running costs ~£2,212–£3,456 / year
Mercedes-Benz C-Class — watch for
- Electronics / battery drain
- Oil leaks
- Air-spring failure if fitted
Running costs ~£2,062–£3,056 / year