BMW has revealed its M Performance 1 Series and 2 Series models.

Dropping a new 340 hp, 3.0-litre in-line petrol engine into the flagship models represents a 14 hp increase in maximum output and ‘optimises the sprinting power of the two cars’, says BMW while lowering their fuel consumption and CO2 emissions.

This boost in power means the M Performance models now accelerate from 0 to 62 mph up to 0.3 seconds quicker than their predecessors, and their fuel consumption and emissions (as calculated in the EU test cycle) are up to 7 per cent lower. 0 to 62 mph takes 4.8 seconds with the standard six-speed manual gearbox or 4.6 seconds with the optional eight-speed Steptronic Sport transmission, while both variants of the open-top models cover the 0-62 mph sprint in 4.9 seconds (automatic: 4.7 seconds).

The M140i 3-door and 5-door, as well as the M240i Coupe and Convertible are fitted with a six-speed manual gearbox which includes a throttle blipping function as standard - while the latest version of the eight-speed Steptronic Sport transmission with wider gear spread is available as an option. The eight-speed also offers Launch Control function delivering traction-optimised acceleration off the line. And as an alternative to sending their power to the rear wheels, all four models can also be ordered with BMW xDrive intelligent all-wheel drive.

Fuel consumption for the M140i 3-door and 5-door and M240i Coupe comes in at 36.2 mpg with CO2 emissions of 179 g/km. The M240i Convertible has fuel consumption of 34.0 mpg and CO2 emissions of 189 g/km.

Model-specific equipment is also geared to ‘promoting a driving experience that fuels sporting ambitions’ says BMW. Standard specification includes M Sport suspension lowered by 10 millimetres, 18-inch M light-alloy wheels in exclusive double-spoke design, an M Sport braking system, Variable Sports Steering with Servotronic function, a model-specific M aerodynamic package and exterior mirror caps in Ferric Grey metallic. On the inside cloth/Alcantara sports seats feature blue contrast stitching, joined by the M leather steering wheel and an M driver’s footrest.

Prices for the new models will be released closer to market launch this summer.