MPG

GLE

RWD

350 2.0 turbo 4-cyl.

20 city/27 hwy

AWD

350 2.0 turbo 4-cyl.

19 city/26 hwy

450 3.0 turbo 6-cyl. Hybrid

19 city/24 hwy

Cayenne

AWD

3.0 turbo V6

19 city/23 hwy

S 2.9 turbo V6

18 city/23 hwy

4.0 turbo V8

15 city/19 hwy

The GLE has 2.7 gallons more fuel capacity than the Cayenne Hybrid’s standard fuel tank (22.5 vs. 19.8 gallons), for longer range between fill-ups.

Transmission

A nine-speed automatic is standard on the Mercedes GLE, for better acceleration and lower engine speed on the highway. Only an eight-speed automatic is available for the Cayenne.

Tires and Wheels

The GLE’s standard tires provide better handling because they have a lower 50 series profile (height to width ratio) that provides a stiffer sidewall than the Cayenne’s standard 55 series front tires.

Suspension and Handling

The GLE’s drift compensation steering can automatically compensate for road conditions which would cause the vehicle to drift from side to side, helping the driver to keep the vehicle straight more easily. The Cayenne doesn’t offer drift compensation steering.

For a smoother ride and more stable handling, the GLE’s wheelbase is 3.9 inches longer than on the Cayenne (117.9 inches vs. 114 inches).

The GLE’s front to rear weight distribution is more even (53.5% to 46.5%) than the Cayenne’s (56.2% to 43.8%). This gives the GLE more stable handling and braking.

Chassis

The design of the Mercedes GLE amounts to more than styling. The GLE has an aerodynamic coefficient of drag of .29 Cd. That is significantly lower than the Cayenne (.34 to .35) and many sports cars. A more efficient exterior helps keep the interior quieter and helps the GLE get better fuel mileage.

As tested by Car and Driver, the interior of the GLE 450 is quieter than the Cayenne:

GLE

Cayenne

At idle

38 dB

40 dB

Full-Throttle

70 dB

74 dB

70 MPH Cruising

63 dB

63 dB

Passenger Space

The GLE offers optional seating for 7 passengers; the Cayenne can only carry 5.

Cargo Capacity

The GLE has a much larger cargo volume with its rear seat up than the Cayenne with its rear seat up (33 vs. 27.1 cubic feet). The GLE has a much larger cargo volume with its rear seat folded than the Cayenne with its rear seat folded (75 vs. 60.3 cubic feet).

Ergonomics

The GLE has a standard remote vehicle starting system, so the vehicle can be started from inside the driver's house. This allows the driver to comfortably warm up the engine before going out to the vehicle. The climate system will also automatically heat or cool the interior. The Cayenne doesn’t offer a remote starting system.

If the windows are left open on the GLE the driver can close them all from a distance using the remote (remote must be aimed at door sensor). On a hot day the driver can also lower the windows the same way. The driver of the Cayenne can only operate the windows from inside the vehicle, with the ignition on.

The GLE offers an optional 115-volt a/c outlet, allowing you to recharge a laptop or run small household appliances without special adapters that can break or get misplaced. The Cayenne doesn’t offer a house-current electrical outlet.

Model Availability

The GLE is available in both rear-wheel drive and four-wheel drive configurations. The Cayenne doesn’t offer a two-wheel drive configuration.

Recommendations

The Mercedes GLE outsold the Porsche Cayenne by over four to one during 2018.

© 1991-2018 Advanta-STAR Automotive Research. All rights reserved.

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