What Car? says...
Abarth, you see, is Fiat's in-house tuner. However, you won't find any Fiat badges on this car and it's sold in separate dealerships.
What you do get is the two-seat interior and rear-wheel drive platform from the Mazda (and the Fiat), but with stiffer suspension, a traction-enhancing limited slip differential and a more powerful version of the turbocharged 1.4-litre petrol engine found in the Fiat.
So, the Abarth is the fastet version of this fine-handling sports car, but it's also the most expensive. Read on to find out if it's worth the extra.