Audi RS 6 vs Mercedes-Benz ML63

Official fuel use, running costs and specs, side by side.

Audi RS 6

Side by side

Specs are for each car's newest version. The better figure is in green.

Audi RS 6Mercedes-Benz ML63

A typical year's fuel

New Zealand
$3,945
$3,945
Australia
$3,269 (better)
$3,272
United Kingdom
£2,397
£2,397
United States
$3,048
$3,048

Official figures

Uses
12.2 L/100km
12.2 L/100km
UK
23 mpg
23 mpg
US
19 mpg
19 mpg
On a full tank
598 km
–

Space

Seats
5
–
Length
4,995 mm
–
Weight
2,025 kg
–

Engine

Engine
4.0 L V8 twin-turbo petrol
–
Power
441 kW
–
Torque
800 Nm
–
Gearbox
8-speed automatic
–
Drive
AWD
–

Safety

ANCAP
★★★★★
–
Euro NCAP
★★★★★
–

A typical year: New Zealand 11,000 km (Ministry of Transport's average for a light vehicle); Australia 11,100 km (ABS Survey of Motor Vehicle Use average); United Kingdom 11,265 km (DfT National Travel Survey average of about 7,000 miles); United States 21,726 km (FHWA average of about 13,500 miles). Real costs depend on how and where you drive. Work out a particular trip.

Each on its own

Other comparisons

What will the drive cost?

Roadtrip works out the fuel or charging cost of any drive for your exact car, finds the cheapest stations on the way, and splits it between everyone in the car.

Rated 4.7 by drivers · 700,000 downloads

The Roadtrip app showing a drive into London that costs £4.81 each, with fuel prices along the way