The tiny gasoline unit produces 105 hp and 107 lb-ft of torque. Paired with a six-speed manual, the Fiat 500L TwinAir ambles from 0-62 mph in 12.3 seconds on to a top speed of 112 mph, and consumes 49 mpg. The new 1.6-liter oil-burner produces an identical 105 hp but over twice as much torque, which Fiat rates as 236 lb-ft. Also paired with a six-speed manual, it jogs from 0-62 mph in 11.3 seconds and hits a top speed of 112 mph. Fuel efficiency is a frugal 52.2 mpg. The engines will be available with the 500L from next month.