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The British Touring Car Championship: What Makes A Champion?

When a team of engineers modifies an already-impressive BMW Series 1 by more than 90 per cent, the results promise to be spectacular.

West Surrey Racing and eBay Motors spent the British Touring Car Championship off-season making changes to their 2014 contender, which will have petrolheads and racing enthusiasts purring.

The bonnet - one of only three parts of the original which remained untouched - houses a superb engine for this highly modified motor which has inspired great confidence in the teams' drivers for this year.

To take a look at what lies beneath the stunning livery of the BTCC contender, check out the interactive infographic below.

An interactive infographic brought to you by eBay

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