The modified Jetta Hybrid was driven by Motor Trend Associate Road Test Editor Carlos Lago, and the official speed was 185.394 mph (298.363 kph). That makes the car, "the fastest speed ever achieved by a production-based hybrid car on the famed Bonneville Salt Flats." Production-based here still means that the powertrain was modified by Volkswagen engineers in Germany. We can see aerodynamic wheels, but exact changes that were implemented were not described, only that the car was "run according to SCTA rules." The production Jetta Hybrid gets 45 miles per gallon and has a 0-60 time of 9.0 seconds. It uses a four-cylinder, 1.4-liter turbocharged, 150-horsepower, TSI gasoline engine mated to a 20-kW (27-hp) electric motor.
185 mpg is impressive, sure, but it's not that far behind the record set in May by a huge hybrid Volvo truck in the flying kilometer: 165 mph.