Fiat 500 Twin Air “The World’s Greenest Petrol Engine” is how the commercials describe Fiat’s latest offering. The already-popular 500 is now on sale with an engine that returns to the 500’s roots. When the original tiny Fiat 500, which sold in millions, was launched in 1957 it was powered by a two-cylinder engine of just 479cc. ‘Powered’ may not be the right word here, at 13 bhp. Now, the retro- styled current 500 is available with Fiat’s brand-new 875cc ‘Twin Air’ petrol engine. And how times have changed! This engine produces 650% more horse power than the little classic, with 85 bhp. Fiat have designed the new engine so that the two cylinders move up and down together (as opposed, for example, to a flat twin ‘boxer’ engine). In order to stop the engine, car and passengers also jumping up and down, the engine is fitted with a balancer shaft for smoothness. Does it work? We’ll come to that. As to the ‘green- ness’ of the new 500, as far as Carbon Dioxide emissions are concerned, the figure is a mere 95 grams per kilometer, which beats all others in quantity production. The only exceptions are those engines of smaller capacity found in certain specialist city cars, so the World’s Greenest claim is reasonable. On the road, the Twin Air feels quite different from its brother models. Anyone who ever drove a Citroen 2CV would recognise the noise emitted. However, anyone who ever drove a 2CV would be blown away by the Fiat’s sheer performance. A notable feature of the new engine, which was designed specifically to exploit Fiat’s clever ‘Air’ engine technology, is the amount of torque or pulling power that it develops. From 1900 rpm a surge of power sweeps the Fiat to the sort of acceleration that you normally only get in diesel engines or the big multi-cylinder cars. Unlike the diesels, though, there’s no running out of puff at 4000 revs. Ascending a long hill on our test drive, with a clear road all the way, the speedometer indicated 80 mph in third gear. The accuracy of this isn’t known, but the car does have a maximum of 108 mph and, as we found, it is all too easy to find yourself galloping along at a speed higher than you would have thought. Something about the sound and feel of the engine fools you into not realising how fast you’re going. The pricing of the 500 Twin Air is interesting. Fiat wants £10,665 for the basic version, called Pop. Sport, Lounge, BlackJack and byDIESEL are, respectively, £12,065, £12,065, £13,365 and £13,715. The BlackJack version has a dulled black finish and byDIESEL doesn’t mean there is a diesel engine, but that the Diesel designer clothes label is associated with the particular styling of this version. Pop, Lounge and byDIESEL are also available in the cabriolet car, the 500C, with prices of £13,665, £15,065 and £16,065. All of that means of course that the Twin Air is not the cheapest option amongst 500s. But Fiat claims that the premium paid on, say, the Pop would be clawed back over three years of less costly ownership. So potential customers will want to take a look at the VED, which is a delicious £zero per annum, and the official fuel consumption figures: in the combined cycle this is 68.9 mpg. The test car was very low mileage, of course, and this, along with the way we drove, may account for a trip meter figure of 39.8 mpg for our 100-mile drive, mainly through the countryside. To help improve on this, a closer watch on the gear-change indicator would have helped. However, this is something that owners will pick up once they get familiar with the system. Also of help would be to press the ‘Eco’ button on the dashboard when in towns; this tells the engine to make around a third less torque available. Across the range, automatic stop/start is another economy feature. One thing you learn with this is that there can be times when the engine will start up again by itself if the management system reckons that the battery will be discharging too much. This could happen in wet or cold weather when the heater, rear window demister, wipers, lights, etc., are all in use. All the 500s sell very much on their retro styling. The latest range of Twin Air adds in a new colour, ‘Pasodoble Blue’, a sky blue in fact; and there is a range of interior colour coding and matching that make the interiors bright and attractive. The Twin Air is a cracker. All the boxes are ticked: it’s environmentally-friendly, it’s cheap to run and it’s a whole load of fun to drive. Tom Scanlan - Nov 2010
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