The new TDCi diesel engine uses a dual-stage vane-cell pump that generates pressures of up to 1400 bar. This means an ultra-fine spray of fuel can be injected incredibly accurately into the cylinders, up to 3,000 times a second, to optimise engine performance, giving more efficient combustion and more power. What's more, this pressure is generated regardless of engine speed, delivering the engine's characteristic responsive and smooth power delivery. This is combined with the latest variable-nozzle turbocharger.

Sound quality is one of the major benefits of the new common-rail system, and the TDCi has 'Noise Reduction Technology', making it one of the most refined diesel engines in its class. The Noise Reduction Technology, 'accelerometer pilot control' (APC), is an ingenious listening system that 'hears' combustion noise levels. And, making constant adjustments every 0.3 milliseconds to the pilot and main injectors, it makes the TDCi incredibly quiet, matching petrol-engine levels of smoothness and responsiveness. This, coupled with a dual mass flywheel, which gives smoother power take-up, results in a quieter, more refined drive.

When it comes to reductions in emissions and fuel economy, the new TDCi engine leads the way. This revolutionary common-rail system uses a two-stage injection, a pilot and a main injection. Because the fuel is injected in smaller bursts, the resulting progressive and smooth fuel combustion is both quieter and more fuel-efficient.

The Duratorq TDCi engines have been carefully analysed to increase quality and durability. Thanks to the TDCi's Noise Reduction Technology constantly optimising engine operation, the new common-rail diesel delivers maximum efficiency with minimal engine wear. It can even compensate for poor quality diesel fuel. The Noise Reduction Technology is just one of the many advances which have helped increase service intervals to every 12,500 miles.

Model	CO2 emissions (g/km)	Fuel consumption (combined mpg)
Focus LX 5-door, 1.6 TDCi (90 PS)	125	60.1
Focus LX 5-door 1.6 16V	161	42.2
Mondeo Zetec 4-door 2.0 TDCi Durashift 6-speed (130 PS)	159	47.1
Mondeo Zetec 4-door 2.0 16V (145 PS)	187	37.2

Figures based on Fuel, Performance and Emissions as at January 2006.