BMW has announced a fifth engine addition to the new 1 Series model line-up.

With a 118i badge on the tailgate, the newest addition to the range is powered by a 2.0-litre petrol engine featuring the same high technical specification as the 120i already announced.

Courtesy of Bi-VANOS and VALVETRONIC technology, the 118i offers 129bhp and 180Nm of torque. Performance figures are a zero to 62mph time of 9.4 seconds and a top speed of 130mph. Fuel consumption is a recorded 38.7mpg on the combined cycle. By comparison, figures for the 120i are 150bhp, 200Nm of torque, 8.7 seconds, 135mph and 38.2mpg.

Full specification has yet to be revealed, but the 118i will be available in Standard, SE and Sport models and standard specification will include 16 inch Run-flat tyres, Dynamic Stability Control, Corner Brake Control, Traction Control, six airbags and CD player. Prices have yet to be finalised, but the entry-level car is likely to have an on-the-road price of £17,300.

An aerodynamic package is now also available for the range, featuring a new front spoiler design, rear valance and additional spoiler extending from the top of the tailgate. Costing £895 (excluding fitting) the package is offered in conjunction with four different 18 inch alloy wheel styles complete with Run-flat tyres, priced from £1,895. Previously, the largest wheel available for the 1 Series was a 17 inch rim.

The BMW X3 is also now offered with a bespoke in-car entertainment system for £1,795 (excluding fitting). This package features a fold-down 7-inch flatscreen display integrated into the roof lining and a DVD player with video game and camcorder compatibility fitted to the centre console. The introduction of this accessory comes at the same time as 320 and 450-litre roof boxes, costing £275 and £450 respectively, are now on offer. For the ultimate in load-lugging capability, a colour-coded ski and luggage combination roof box costing £1,085 is also available.