In a surprise move, BMW displayed its new X3 M and X4 M performance “Sport Activity Vehicles” for the first time in the lead up to today’s Nürburgring DTM race. The two lightly-camouflaged prototypes were test driven on the track to show off their new aerodynamic, suspension, and drivetrain tweaks. BMW claims the engine is an all-new inline-six cylinder with “M TwinPower Turbo technology” and high-revving characteristics.
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