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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Citroen | C6 | A6 | 2946 | Petrol | 16.3 | 8.2 | 11.2 | 17.3 | 34.4 | 25.2 | 14.4 | 28.6 | 21.0 | 266 | G |
| Citroen | C6 | M6 | 2179 | Diesel | 8.7 | 5.4 | 6.6 | 32.5 | 52.3 | 42.8 | 27.1 | 43.5 | 35.6 | 175 | E |
| Citroen | C6 | A6 | 2720 | Diesel | 12.0 | 6.8 | 8.7 | 23.5 | 41.5 | 32.5 | 19.6 | 34.6 | 27.1 | 230 | G |
| Citroen | C8 | M5 | 1997 | Petrol | 12.0 | 7.3 | 9.0 | 23.5 | 38.7 | 31.4 | 19.6 | 32.2 | 26.1 | 213 | F |
| Citroen | C8 | A4 | 1997 | Petrol | 13.3 | 7.5 | 9.6 | 21.2 | 37.7 | 29.4 | 17.7 | 31.4 | 24.5 | 229 | G |
| Citroen | C8 | M6 | 1997 | Diesel | 8.8 | 5.8 | 6.9 | 32.1 | 48.7 | 40.9 | 26.7 | 40.6 | 34.1 | 182 | E |
| Citroen | C8 | M6 | 1997 | Diesel | 9.0 | 6.0 | 7.1 | 31.4 | 47.1 | 39.8 | 26.1 | 39.2 | 33.1 | 188 | F |