List of May 2008 UK fuel economy ratings (A–D) List of May 2008 UK fuel economy ratings (A–D) List of May 2008 UK fuel economy ratings (A–D)

| Manufacturer | Model | Transmission | Engine_Capacity | Fuel_Type | L_100km_Urban_Cold | L_100km_Extra_Urban | L_100km_Combined | mpg_UK_Urban_Cold | mpg_UK_Extra_Urban | mpg_UK_Combined | mpg_US_Urban | mpg_US_Extra_Urban | mpg_US_Combined | CO_2_g_km | Green_Rating |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Audi | A6 Avant | M6 | 3123 | Petrol | 14.3 | 7.2 | 9.8 | 19.8 | 39.2 | 28.8 | 16.5 | 32.6 | 24.0 | 233 | G |
| Audi | A6 Avant | AV | 3123 | Petrol | 13.9 | 7.1 | 9.6 | 20.3 | 39.8 | 29.4 | 16.9 | 33.1 | 24.5 | 229 | G |
| Audi | A6 Avant | QM6 | 3123 | Petrol | 15.6 | 8.0 | 10.8 | 18.1 | 35.3 | 26.2 | 15.1 | 29.4 | 21.8 | 257 | G |
| Audi | A6 Avant | QA6 | 3123 | Petrol | 15.7 | 8.1 | 10.9 | 18.0 | 34.9 | 25.9 | 15.0 | 29.1 | 21.6 | 259 | G |
| Audi | A6 Avant | QA6 | 4163 | Petrol | 15.7 | 8.2 | 10.9 | 18.0 | 34.4 | 25.9 | 15.0 | 28.6 | 21.6 | 259 | G |
| Audi | A6 Avant | M6 | 1968 | Diesel | 8.6 | 4.8 | 6.2 | 32.8 | 58.9 | 45.6 | 27.3 | 49.0 | 38.0 | 162 | D |