Toyota is adding its new 1.4 litre D-4D common rail diesel engine to the Yaris and Yaris Verso ranges to broaden their appeal in western Europe, where diesel engine offerings are becoming critical to success (diesels accounting for around 40% of passenger car sales).

Toyota aims to sell about 36,500 units in Europe of its Yaris with 1.4 D-4D engine, and a further 10,400 units of the Yaris Verso 1.4 D-4D in 2002 – the first full year of sales.

The introduction of the D-4D engine to the Yaris/Yaris Verso range is planned to give Toyota some 47,000 additional sales, important in reaching Toyota’s target of 800,000 units of annual sales in Europe by 2005, equivalent to five per cent market share.

Toyota engineers have succeeded in reducing the new engine’s weight to just 99 kg. Both the cylinder head, block and air-air intercooler are made of aluminium alloy. Also, the Toyota turbocharger is completely integrated into the exhaust manifold and the alloy intake manifold is also integrated into the cylinder head.

With a power output of 74bhp, Toyota claims that the Euro III emissions compliant engine has a comparable performance to a similarly sized gasoline engine. Also, the company says that the engine manages to produce the same type of linear torque-increase that is associated with a gasoline engine, but with the top levels of torque that are provided by a diesel engine.

Toyota claims that the use of an intercooler and the implementation of a second generation Bosch common rail system, means that the engine is exceptionally efficient, with the D-4D Yaris managing a combined fuel consumption of 67.3mpg.