Toyota will take the wraps off redesigned versions of two of its most important car lines in Europe - the Yaris and RAV4 - at the Frankfurt motor show next month.

The newcomers, due to be revealed on the 13 September press day, will be joined by two new concept vehicles plus the Corolla Verso with 134 and 175bhp versions of Toyota's new 2.2-litre D-4D diesel engine and the next-generation Hilux pickup.

Toyota describes the second generation Yaris (known as the Vitz in Japan and Echo in other export markets) as a "more advanced vehicle with higher levels of comfort quality and safety".

It was designed at ED2, the automaker's European design studio in the south of France, and is, Toyota claims, "a more 'grown up' car in every respect".

European production has already started at the Valenciennes factory in northern France and sales are expected to begin next January.

The new RAV4 will be the third generation of the vehicle which Toyota claims kick-started the market for sporty, compact SUVs 11 years ago. Since then, it has become a consistent best-seller, topping the European 4x4 (SUV) sales charts for the past four years.

Toyota said the new model "promises significantly enhanced driving pleasure and performance, improved quality, wider application of advanced technology, greater interior space and a creative modular interior design". It will be launched across Europe - including the UK - by spring 2006.

Toyota will also show two new concept cars at Frankfurt. The Endo, the latest concept from the ED2 design centre, is an urban-friendly car designed to address some of the key issues of modern urban life.

It will be presented alongside the Toyota i-unit, a new approach to human mobility that enables the driver to interact with his or her surroundings. The design is inspired by a leaf, "a natural expression of life on earth".

The Turkish-built seven-seat Corolla Verso will be shown with two versions of the automaker's new 2.2-litre D-4D diesel engine. The MPV/minivan will be offered with the 175bhp unit with D-CAT catalyst technology for ultra-clean running that is also due to be offered in the Avensis in 2006, and a 134bhp version of the 2.2-litre engine that will replace the 114bhp 2.0-litre D-4D in the range from November.

Toyota will also show its Czech Republic-built Aygo city car with a PSA-made 53bhp 1.4-litre turbodiesel engine. This version will join the range early in 2006.

Toyota's 2006 RAV4
Redesigned Yaris, like predecessor, is built in France