The Audi RS Q3 and the Mercedes-AMG GLA45 S are the fastest compact-sized premium SUVs out there, powered by highly efficient engines and featuring numerous tweaks that help them stand apart from their regular versions. But which one is faster in a straight line?
The RS Q3 gets 400 PS (394 hp / 294 kW) out of its 2.5-liter five-cylinder, which it pushes on to all four wheels. The Mercedes packs a 2.0-liter four-cylinder capable of 421 PS (415 hp / 310 kW) and also has AWD. However, the Audi’s lower curb weight might compensate for the power difference.
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