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Drop a couple of cylinders, add start-stop technology, slap a turbo on, drop it in the Fiat 500 and call it a day. That's exactly what Fiat Powertrain Technologies has done with its newly-introduced two-cylinder TwinAir 85-horsepower engine. The engine has found its first home in the cuddly Cinquicento, but we expect the mill to expand to additional Fiat models soon.

Not since the Citroen 2CV has a car been sold to the mass market with a two-cylinder engine. That will change next year when Fiat begins selling its hotly anticipated revival of the 500 with a 0.9-liter turbocharged two-cylinder engine that Auto Express reports will produce between 90 and 110 bhp. The tiny two-pot is said to be 20% more economical than an average 1.2-liter city car, which translates to about 60 mpg on the combined cycle. Those power numbers are nothing to sneeze at either, consi