Audi  A2
1.2 TDI
city: 65.33
highway: 87.11
average: 78.4









Smart
fortwo CDI
city: 60.31
highway: 75.87
average: 69.18









Peugeot
107 Urban 1.4 HDi 54 / Citroën  C1 HDi 55 SX
city: 44.38
highway: 69.18
average: 57.37)







Citroën  C2 HDi 70 SensoDrive VTR
city: 48
highway: 61.9
average: 56







KIA  Picanto 1.1 CRDi EX
city: 48
highway: 31.9
average: 56









The Prius is rated at 60 mpg in the city and 51 mpg country, but those numbers the EPA obtained were by way of strapping Toyota’s Hybrid Synergy Drive to a dynamometer. In Europe, fuel economy is calculated by actually operating an engine on the road while it’s under the hood of a vehicle, causing the Prius to return a more realistic 47 mpg in the city and 56 mpg on the highway, or 5.0L/100km city and 4.2L/100km highway in the continent’s native metric.

This more realistic fuel economy rating lowers the bar enough for a handful of European small cars to beat the Prius in a game at which many Americans believe it’s indomitable. And guess what, these cars from the old world all use highly fuel-efficient diesel engines.