Audi Q9 vs Mercedes-Benz GLS

How does the Audi Q9 stack up against the Mercedes-Benz GLS? We put their headline specs side by side so you can see exactly where each car leads.

Audi Q9Audi Q9
vs
Mercedes-Benz GLSMercedes-Benz GLS
SpecAudi Q9Mercedes-Benz GLS
Horsepower (max)591 hp603 hp
0-100 km/h (fastest)3.8 s4.1 s
Top speed250 km/h280 km/h
Variants34
Body styleFull-size 7-seat SUVFull-size 7-seat SUV
GenerationQ9X167
Production2027 – present2020 – present
Length5,310 mm5,210 mm
Width2,210 mm1,956 mm
Height1,810 mm1,823 mm
Wheelbase3,140 mm3,135 mm

Audi Q9 vs Mercedes-Benz GLS: common questions

Is the Audi Q9 or Mercedes-Benz GLS faster?
The Audi Q9 is quicker, hitting 0-60 mph in 3.6s versus the Mercedes-Benz GLS's 3.9s (0-100 km/h in 3.8s vs 4.1s).
Which has more horsepower, the Audi Q9 or the Mercedes-Benz GLS?
The Mercedes-Benz GLS makes more power: 603 hp (450 kW) versus 591 hp (441 kW) for the Audi Q9.
Is the Audi Q9 or Mercedes-Benz GLS faster on top speed?
The Mercedes-Benz GLS has the higher top speed at 174 mph (280 km/h), versus 155 mph (250 km/h) for the Audi Q9.
What is the main difference between the Audi Q9 and the Mercedes-Benz GLS?
Both are full-size 7-seat suvs in the same class. The Mercedes-Benz GLS has the power advantage, while the Audi Q9 undercuts it, so the choice comes down to the spec differences above.