Mini models are to benefit from a wide of technical advances and personalisation options with effect from spring 2010.

At the top of the list are a new range of petrol engines that offer more power and torque while reducing both emissions and fuel consumption.

In addition, a new One Convertible will bring the thrill of open air MINI driving to a wider audience.

Mini is also raising the customisation possibilities by offering a range of unique Rainbow colour options and an extension to the Graphite Special Edition model range to include Clubman models.

"Hot on the heels of the launch of customer field trials for the electric MINI E, MINI is introducing this array of new technology and features for the new decade," said Jochen Goller, Director of Mini UK.

"Once again, our dedication to continuous improvement will bring substantial benefits in both efficiency and performance to our customers. Better still, there will be no price increase when the new models go on sale in March 2010."

A new and improved version of the petrol engine will be fitted to all First, One, Cooper and Cooper S models in the Hatch, Convertible and Clubman ranges.

The First and One models will now be fitted with a 1.6 litre engine, replacing the 1.4, and Valvetronic valve operation that delivers more torque and better fuel consumption.

All Mini petrol-engined models will conform to European EU5 emissions standards or ULEV 11 in the USA.

Valvetronic variable valve timing delivers a five per cent improvement on its own while an on- demand, map-controlled oil pump achieves a further 2.5% fuel saving.

An improved, low friction engine vacuum pump accounts for another one per cent and a map-regulated water pump working on a pulsed cycle (rather than simply on or off) saves 1.2% fuel.

(PR/BMcC)