Audi S4 vs Mercedes-Benz C-Class Estate

SpecAudi S42024Mercedes-Benz C-Class Estate2024
Price (OTR)£57,450£49,540
Power347 bhp313 bhp
Torque700 Nm550 Nm
0–60 mph4.8 secs5.9 secs
Top Speed155 mph155 mph
MPG (combined)39.2 mpg403 mpg
CO₂163 g/km15 g/km
Boot Space495 litres360 litres
Kerb Weight1830 kg1920 kg
Engine3.0L2.0L
Transmission8-speed Tiptronic9-speed Auto
DrivetrainAWDRWD
Insurance Group4029
Annual Tax£190£165
Euro NCAP5 / 5 stars5 / 5 stars
Seats55
Fuel TypeDieselPetrol Hybrid

Running Costs Calculator

Adjust the inputs to estimate what each car will cost you to own.

Over 3 yearsAudi S4Mercedes-Benz C-Class Estate
Fuel / energy£5,149£481
Road tax (VED)£570£495
Insurance (est.)£5,970£4,617
Depreciation (est.)£22,980£19,816
Total cost£34,669£25,409
How these numbers are calculated
  • Fuel cost uses the car's combined MPG and the price you enter.
  • EV energy cost assumes 3.5 mi/kWh (UK average). Real efficiency varies by car and driving style.
  • Insurance is a rough estimate based on the car's insurance group — your actual quote depends on age, location, and history.
  • Depreciation assumes 40% loss over 3 years, scaled linearly. Premium brands and EVs can deviate significantly.
  • Road tax uses the published first-year and standard VED for the car's CO₂ band.