BMW M5 vs Audi Q8

SpecBMW M52023Audi Q82024
Price (OTR)£112,435£76,670
Power625 bhp340 bhp
Torque750 Nm500 Nm
0–60 mph3 secs5.6 secs
Top Speed155 mph155 mph
MPG (combined)25.4 mpg27.2 mpg
CO₂252 g/km236 g/km
Boot Space530 litres605 litres
Kerb Weight1945 kg2175 kg
Engine4.4L3.0L
Transmission8-speed Auto8-speed Tiptronic
DrivetrainAWDAWD
Insurance Group5040
Annual Tax£190£190
Euro NCAP5 / 5 stars5 / 5 stars
Seats55
Fuel TypePetrolPetrol

Running Costs Calculator

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

Over 3 yearsBMW M5Audi Q8
Fuel / energy£7,625£7,120
Road tax (VED)£570£570
Insurance (est.)£7,200£5,970
Depreciation (est.)£44,974£30,668
Total cost£60,369£44,328
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.