Mercedes-AMG C 63 S vs Audi A8

SpecMercedes-AMG C 63 S2023Audi A82024
Price (OTR)£83,750£103,285
Power680 bhp462 bhp
Torque1020 Nm700 Nm
0–60 mph3.2 secs4.7 secs
Top Speed174 mph155 mph
MPG (combined)37.2 mpg113 mpg
CO₂172 g/km56 g/km
Boot Space350 litres505 litres
Kerb Weight2165 kg2295 kg
Engine2.0L3.0L
Transmission9-speed Auto8-speed Tiptronic
DrivetrainAWDAWD
Insurance Group5046
Annual Tax£190£190
Euro NCAP5 / 5 stars5 / 5 stars
Seats55
Fuel TypePetrol HybridPetrol Hybrid

Running Costs Calculator

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

Over 3 yearsMercedes-AMG C 63 SAudi A8
Fuel / energy£5,206£1,714
Road tax (VED)£570£570
Insurance (est.)£7,200£6,708
Depreciation (est.)£33,500£41,314
Total cost£46,476£50,306
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.