Audi A6 40 TDI S tronic vs Audi A6 50 TFSI e quattro S tronic
At 15,000 km a year and typical prices, the Audi A6 40 TDI S tronic costs about €1,468 a year in energy against €1,901 for the Audi A6 50 TFSI e quattro S tronic, a difference of €433. Official WLTP figures: 4.8 l/100 km against 6.5 l/100 km combined.
Both are variants of the Audi A6; the choice is the powertrain.


Measured with the battery depleted, so this is what the car uses when you do not plug in. Your real figure depends on how often you charge; the compare tool works it out from your trips.
| Figure | Audi A6 40 TDI S tronic | Audi A6 50 TFSI e quattro S tronic |
|---|---|---|
| Motor | Diesel | Plug-in Hybrid |
| Power | 204 PS | 299 PS |
| Combined | 4.8 l/100 km | 6.5 l/100 km |
| City | 6.5 l/100 km | 8.1 l/100 km |
| Suburban | 4.4 l/100 km | 6.5 l/100 km |
| Country road | 4.2 l/100 km | 6.0 l/100 km |
| Motorway | 4.9 l/100 km | 6.4 l/100 km |
| CO₂ | 140.0 g/km | 24.0 g/km |
| Electric range | - | 69 km |
| Energy cost per year at 15,000 km | €1,468 | €1,901 |