Mercedes-Benz GLS-Class vs Porsche Cayenne
Official fuel use, running costs and specs, side by side.


Side by side
Specs are for each car's newest version. The better figure is in green.
A typical year's fuel
- United Kingdom
- £2,200
- £2,197 (better)
- New Zealand
- $3,622
- $3,616 (better)
- Australia
- $3,001
- $2,996 (better)
- United States
- $2,798
- $2,793 (better)
Official figures
- Uses
- 25 mpg
- 25 mpg (better)
- Also
- 11.2 L/100km
- 11.2 L/100km (better)
- On a full tank
- 499 miles
- 500 miles (better)
Space
- Seats
- 7
- 5
- Boot
- 355 L
- 670 L (better)
- Towing, braked
- –
- 3,500 kg
- Length
- 5,207 mm
- 4,931 mm
- Weight
- –
- 2,105 kg
Engine
- Engine
- 3.0 L 6-cylinder turbo petrol mild hybrid
- 3.0 L turbocharged V6 petrol
- Power
- 270 kW (better)
- 250 kW
- Torque
- 500 Nm (better)
- 450 Nm
- Gearbox
- 9-speed automatic
- 8-speed automatic
- Drive
- AWD
- AWD
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.
GLS-Class or Cayenne?
Which uses less fuel, the Mercedes-Benz GLS-Class or the Porsche Cayenne?
The Porsche Cayenne, at 11.2 L/100km (25 mpg UK, 21 mpg US) to the Mercedes-Benz GLS-Class's 11.2 L/100km (25 mpg UK, 21 mpg US), by their latest official figures.
Which has the bigger boot, the Mercedes-Benz GLS-Class or the Porsche Cayenne?
The Porsche Cayenne, at 670 L to the Mercedes-Benz GLS-Class's 355 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.
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