Is the less powerful BMW X7 M50i quicker than the Mercedes-AMG G 63?

A few years ago drag racing used to be a thing for muscle cars and supercars, as was development at the Nurburgring. Nowadays, most vehicles, including performance SUVs, are being tested on race tracks before production starts, and we can also see them running quarter-mile races.

Are drag races relevant for a massive, full-size SUV? Not really. But people still do it, simply because it’s fun. If you ever wondered how the Mercedes-AMG G 63 and the BMW X7 M50i compare in straight-line racing, the folks over at Track Day just ran a test.

Chasing Whales: BMW X7 M50i Drag Races Mercedes-AMG G 63
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The AMG G 63 needs to introduction.

The G-Class is one of Mercedes’ most iconic nameplates and the latest AMG G 63, introduced in 2018, is the fastest and most powerful yet. Fitted with a twin-turbo, 4.0-liter V-8 engine, this 5,500-pound behemoth comes with 577 horsepower and 627 pound-feet of torque on tap. Mercedes says it will hit 60 mph in 4.5 seconds.

In the other corner, we have the BMW X7 M50i, the range-topping trim of a full-size SUV that the Germans launched in 2018. It also features a twin-turbo V-8 in the form of a 4.4-liter unit that packs 523 horsepower and 553 pound-feet of torque. That’s notably less power than the Merc, but the M50i is also some 200 pounds lighter.

The Bimmer sprints to 60 mph in the same 4.5 seconds.

Track Day’s test includes three runs. There’s one form 60 to 125 mph in fully automatic mode, one from 30 to 120 mph in automatic mode, and one from 30 to 120 mph in manual mode. The BMW clearly wins the first leg and it also takes the checkered flag in the second run, despite the Mercedes getting a slight jump. The G 63 takes off faster in the third race, but the Bimmer catches up and eventually wins.

The moral of the comparison? Well, Track Day argues that the X7 features the better platform, but it’s also pretty obvious that extra power doesn’t necessarily make a vehicle faster.

Another important thing to keep in mind here is that the Mercedes-AMG G 63 comes in at a whopping $156,450, while the BMW X7 M50i starts from $99,800.

Mercedes-AMG G63 and BMW X7 M50i Specs
Mercedes-AMG G63 BMW X7 M50i
Engine  4.0-liter, twin-turbo V-8 4.4-liter, twin-turbo V-8
Horsepower  577 Horses 523 Horses
Torque  627 pound-feet 553 pound-feet
0-60 mph 4.5 s 4.5 s
Price  $156,450 $99,800
Ciprian Florea
Senior Editor and Supercar Expert - ciprian@topspeed.com
Ciprian's passion for everything with four wheels (and more) started back when he was just a little boy, and the Lamborghini Countach was still the coolest car poster you could hang on your wall. Ciprian's career as a journalist began long before earning a Bachelor's degree, but it was only after graduating that his love for cars became a profession.  Read More
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