BMW's latest diesel engine - the dual turbo 2.0L four cylinder engine provides exceptional power for a 2.0L diesel and excellent fuel economy. The 123d is rated at 204hp while achieving 45mpg on the EU driving cycle and emitting only 138g/km of CO2. The engine uses a pair of turbochargers of different sizes to provide quick low end response and plenty of top end power. Features like an aluminum block have helped cut 38lbs from the weight of the engine compared to BMW's older four cylinder diesel. The performance and emissions of this engine are also enhanced by a third-generation common rail fuel injection system and particulate filter. [Source: Ukipme.com]