The Audi A6 Avant is available with a choice of six engines featuring direct fuel injection: one four-cylinder unit and five V6 units. Five of them use forced induction to keep displacement relatively low, thus improving their efficiency. The 2.0 TDI with 130 kW (177 hp) has the best fuel consumption figures. Paired with the manual transmission, it consumes on average just 5.0 liters of fuel per 100 km (47.04 US mpg), corresponding to CO2 emissions of 132 g per km (212.43 g/mile).
The 3.0 TDI is available in three variants: with 150 kW (204 hp); with 180 kW (245 hp) – a clean diesel version will follow somewhat later; and the top version with 230 kW (313 hp). The twin-turbo has a two-stage turbocharger group that delivers a maximum boost pressure of up to 3.2 bar, imbuing the 3.0 TDI with superior performance. The sprint from zero to 100 km/h (62.14 mph) takes 5.4 seconds (preliminary value); the electronically limited top speed of 250 km/h (155.34 mph) is just a formality.
The 2.8 FSI with 150 kW (204 hp) uses the Audi valvelift system, which varies the lift of the intake valves in two stages as necessary. This allows the engine to breathe easier, increasing torque and reducing fuel consumption. The most powerful gasoline engine in the model series is the supercharged 3.0 TFSI producing 220 kW (300 hp).
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