Fiat 500 Twinair
Saturday 27 November 2010
Top speed: 108mph 0-62mph 11 seconds
CO2 emissions: 95g/km
Best for: Economy twinned with enjoyment
Also worth considering? BMW Mini, Ford Ka, Volkswagen Beetle
When the Fiat 500 burst on to the scene a couple of years ago, everybody noticed. Like Volkswagen's reinvented Beetle and BMW's reimagined Mini, it was a modern take on a much-loved old car, in this case the 1957 500, which turned post-war Italy into a nation of motorists. So far, the Mini has had the edge over the current 500 as a driving machine, but the Fiat has probably won more hearts with its pert good looks, which suddenly made its retro rivals from the German manufacturers seem slightly crude. Now the 500 is available with a remarkable new engine – TwinAir – which puts Fiat right at the forefront of modern trends in engine design, while at the same time symbolically strengthening the bond between today's car and its famous predecessor.
Downsizing is what engines are all about at the moment, and the TwinAir is one of the most impressive examples. Most cars, including modern 500s, have engines with four or more cylinders but the TwinAir has just two. The smallest engine previously available in the 500 has a capacity of 1.2 litres but the Twin Air is just 875cc. The point of downsizing is to enhance economy but not at the expense of performance or refinement, so the TwinAir is packed with technology, including a turbocharger, Fiat's clever MultiAir variable valve-gear and a balancer shaft that smooths out the unevenness to which a two-cylinder engine would otherwise be susceptible. The result: some of the best official fuel consumption and CO2 emissions data for any car on the market.
None of that would count for much if the TwinAir didn't convince out on the road. If anything, though, it's even better in practice than it is on paper. In fact, it's one of the most characterful engines fitted to any current car, with a purposeful, wonderfully fruity note that makes it sound a bit like a BMW motorcycle. Its marvellous mid-range torque drops off a little at low revs, but overall, it's superb.
And that link between the TwinAir and the 1957 500? Well the older car had a tiny two-cylinder engine too, but one that only produced 13 horsepower. I suspect it would, nevertheless, have struggled to match the exceptional fuel consumption achieved by its bigger, safer and more comfortable successor, which has 85 at its disposal, a reminder that while the manufacturers find it hard to improve upon the looks of their older cars, they probably wouldn't want to borrow much else from them.
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