German firm Audi plans a host of new green technology for its range of cars.
As all vehicles improve across the board, drivers find more to like in underdog-brands.
Audi adds Freelander-rivalling Q5 to range.
Analysts expect annual hybrid sales to blow past 1 million by the end of the decade. We look at the latest models to hit the market.
Diesel SUVs and luxury cars dominate our list but even the biggest polluters today are far cleaner than the average car 30 years ago.
| 2008 Audi A3 | 2008 Audi A4 | 2008 Audi TT | 2008 Audi A5 |
| 2008 Audi Q7 | 2008 Audi A6 | 2008 Audi S5 | 2008 Audi S4 |
| 2008 Audi RS4 | 2008 Audi A8 | 2008 Audi S6 | 2008 Audi S8 |
| 2008 Audi R8 |