All Mini Cooper S body types will come with the option of diesel power for the first time.
A 141bhp 2.0-litre diesel engine is to be fitted to Mini hatchback, Clubman, Convertible and Countryman versions.
Called Cooper SD, all models come with brake-energy generation, engine stop-start, gear shift display and electric power steering, which all combine to improve fuel economy.
The Mini Cooper SD hatch averages 65.7mpg and emits 114g/km of CO2. Its 0-62mph dash is completed in 8.1 seconds and it has a top speed of 134mph.
Cooper SD models come with an extra -arge air intake on the front apron, an air scoop on the bonnet, twin exhaust tailpipes and a roof spoiler.
Mini Cooper SD prices
Countryman ALL4Top speed
Mini is also offering a new sport pack, which aims to bring a hint of John Cooper Works (JCW) to less sporty models in the Mini range.
The sport pack includes aerodynamic modifications to the front and rear of the car, JCW alloy wheels, JCW door entry strips, JCW leather steering wheel and gearknob, part-leather sports seats, black interior trim and white bonnet stripes and indicators.
It also includes a range of software upgrades to ensure better traction when pulling away and in corners.
Prices for the pack range from 2150 to 3245 depending on model.