Mercedes-AMG GLA45 vs. BMW X3 M40i Acceleration Test Climbs to 155 MPH/250 KPH

It all starts with the size, since the GLA is a direct competitor for the X1, not the X3 (this is a GLC rival). Nevertheless, the X1 doesn't have the kind of powerplant allow it to face the hotness of the GLA45.

Even the branding of the two crossovers is different: while the GLA45 is a Mercedes-AMG model, the X3 M40i is an M Performance machine, not an all-out M car.

Even their tech sides have plenty of differences: the Affalterbach model is animated by a turbo-four, while the Bimmer comes with a single-turbo (twin-scroll) 3.0-liter straight-six.

Nevertheless, the sprinting battle between the two slabs of Germany only focuses on one aspect - how quickly can their speedometer needles travel?

We have to mention this isn't a drag race, with the two having been hooned on different occasions. And there might be a small delay between the two pieces of footage stiched together.

Even so, the comparo is relevant, showcasing the straight-line abilities of the two crossovers.

It's worth mentioning that both machines are preparing to go through changes. We'll start with the BMW, whose X3 M version is set to make its debut later this year. Animated by a new twin-turbo 3.0-liter straight-six, the newcomer will mark the first time when the X3 receives a proper M badge. As such, the tech massage will spread beyond the engine compartment.

As for the Mercedes-Benz GLA, the second generation of the compact crossover could also debut this year, but only non-AMG prototypes have been spied to date, so we'll have to wait for the arrival of the Affalterbach animal.