BMW AUTO

The flagship of the 1-series range is the 135i with a 3-litre twin-turbo petrol engine, generating 225 kW (306 PS; 302 hp) with its six cylinders. This model also comes with a modified M sports package as standard. The 135i comes with the world's first differential with double-helical ball bearings which have the advantage of running at an even lower operating temperature reached more quickly than before thanks to the reduction of fluid required in the differential. The 123d (150 kW (204 PS; 201 hp)) heads up the range of diesels and is the first ever 4-cylinder diesel engine to come with sequential twin-turbo technology. In terms of fuel consumption, the 123d and 120d rate between 4.8 L/100 km (59 mpg-imp; 49 mpg-US) and 5.2 L/100 km (54 mpg-imp; 45 mpg-US).

Like the three- and five-door BMW 1 Series models, the E82 also features various BMW EfficientDynamics components to reduce fuel consumption (see below). The Coupé is 133 mm (5.2 in) longer than the hatch, creating 20 litres of extra boot space. It is 220 mm (8.7 in) shorter than 3-series Coupé (E92). 120d, 123d and 135i Coupés' announced unladen weights (EU) are 1450, 1495, and 1,560 kg (3,400 lb), respectively (corresponding to approx. 3,285 lb (1,490 kg) curb weight for the 135i - a 90 lb (41 kg) reduction from the 335i Coupé).

The 1 Series Coupé is marketed in the US as a spiritual successor to the legendary BMW New Class with its long bonnet, slim cabin and short rear. Apart from slight modifications, it uses the same nose design as the rest of the 1 Series so as to ensure some visual consistency within the range. It has been said that the BMW 1 invokes memories of the E36 BMW, as stated in both Road and Track and Car and Driver Magazines.
 
2009 BMW 128i convertible (US)