Audi RS6 vs Mercedes-Benz C-Class Estate

SpecAudi RS62023Mercedes-Benz C-Class Estate2024
Price (OTR)£105,850£49,540
Power621 bhp313 bhp
Torque850 Nm550 Nm
0–60 mph3.4 secs5.9 secs
Top Speed155 mph155 mph
MPG (combined)24.6 mpg403 mpg
CO₂260 g/km15 g/km
Boot Space565 litres360 litres
Kerb Weight2070 kg1920 kg
Engine4.0L2.0L
Transmission8-speed Tiptronic9-speed Auto
DrivetrainAWDRWD
Insurance Group5029
Annual Tax£190£165
Euro NCAP5 / 5 stars5 / 5 stars
Seats55
Fuel TypePetrolPetrol Hybrid

Running Costs Calculator

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

Over 3 yearsAudi RS6Mercedes-Benz C-Class Estate
Fuel / energy£7,872£481
Road tax (VED)£570£495
Insurance (est.)£7,200£4,617
Depreciation (est.)£42,340£19,816
Total cost£57,982£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.