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A growing number of replacement car engines for hybrid vehicles could be making their way onto the market, as the demand for such cars increases.

According to Toyota, maker of one of the most popular hybrid cars the Prius, "the momentum for hybrid is increasing".

John Williams, Toyota president, claims that the environmentally friendliness of hybrids, coupled with reliability, ease of use and smooth driving style, are boosting their popularity.

It comes after figures from the Society of Motor Manufacturers and Traders revealed that almost 100,000 hybrid vehicles have been sold in the UK from 2007 to the first quarter of this year.

Of these, 77,000 were made by Toyota or its sister brand Lexus.

And hybrid Toyota car parts could become even more common later this year, with the manufacturer introducing both the Yaris Hybrid and the Prius + this summer.

Both these new models will produce CO2 emissions below 100g/km, meaning they will be exempt from both road tax (VED) and the London congestion charge.