BMW M4 vs Porsche Cayman

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

BMW M4Porsche Cayman

Side by side

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

BMW M4Porsche Cayman

A typical year's fuel

New Zealand
$3,024 (better)
$3,169
Australia
$2,507 (better)
$2,626
United Kingdom
£1,837 (better)
£1,925
United States
$2,336 (better)
$2,449

Official figures

Uses
9.4 L/100km (better)
9.8 L/100km
On a full tank
631 km
653 km (better)

Space

Seats
4
2
Boot
440 L (better)
275 L
Length
4,794 mm
4,379 mm
Weight
1,730 kg
1,335 kg

Engine

Engine
3.0 L 6-cylinder twin turbo petrol
2.0 L flat-4 turbo petrol
Power
375 kW (better)
220 kW
Torque
650 Nm (better)
380 Nm
Gearbox
8-speed automatic
6-speed manual
Drive
RWD
RWD

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.

M4 or Cayman?

Which uses less fuel, the BMW M4 or the Porsche Cayman?

The BMW M4, at 9.4 L/100km (30 mpg UK, 25 mpg US) to the Porsche Cayman's 9.8 L/100km (29 mpg UK, 24 mpg US), by their latest official figures.

Which has the bigger boot, the BMW M4 or the Porsche Cayman?

The BMW M4, at 440 L to the Porsche Cayman's 275 L, for their newest versions.

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