[Mixer]

Another article:
https://www.topgear.com/car-reviews/cupra/first-drive

The car arrives at the factory as a standard Leon but is quickly stripped down to the shell and modified for safety. The transmission tunnel is hammered in to make sure the driver is more central in the car to protect against side impacts and a hefty roll-cage is welded in. Then a race seat is plonked as low as it can so that all that is left are some pedals, a steering wheel, a minimal LCD display and somewhere to sit – all you need for a race car.
Outside, a new aero package is fitted that includes a series standardised carbon fibre front splitter (one of only a few carbon parts), rear ‘grasshopper’ spoiler (for more downforce), huge plank-like side skirts and an aggressive front end with added cooling. Thanks to fully adjustable suspension, it sits a lot lower and lightweight wheels wrapped in slicks fill the swollen arches. And, we have to say, the grey and copper tones work well on the bloated bodywork.

I didn't realise all the VAG TCR cars come out of the same factory.