Facts and figures
Audi RS4 Avant vs Mercedes C63 AMG Estate
| Audi RS4 Avant | Mercedes C63 AMG Estate | |
| On the road price/total as tested | £54,925/£67,535 | £58,130/£62,145 |
| Residual value (after 3yrs/36,000) | £29,769/54.2% | £27,844/47.9% |
| Depreciation | £25,156 | £30,286 |
| Annual tax liability std/higher rate | £3,784/£7,568 | £3,968/£7,937 |
| Annual fuel cost (12k/20k miles) | £5,012/£8,353 | £5,418/£9,031 |
| Ins. group/quote/road tax band/cost | 41/TBA/L/£460 | 45/£985/M/£475 |
| Servicing costs | N/A | £40 a month (3yrs) |
| Length/wheelbase | 4,719/2,813mm | 4,606/2,760mm |
| Height/width | 1,416/1,850mm | 1,459/1,770mm |
| Engine | V8/4,163cc | V8/6,208cc |
| Peak power/revs | 444/8,250 bhp/rpm | 451/6,800 bhp/rpm |
| Peak torque/revs | 430/4,000 Nm/rpm | 600/5,000 Nm/rpm |
| Transmission | 7-spd d’l-clutch/4wd | 7-spd d’l-clutch/4wd |
| Fuel tank capacity/spare wheel | 61 litres/sealant | 66 litres/sp. saver |
| Boot capacity (seats up/down) | 490/1,430 litres | 480/1,500 litres |
| Kerbweight/payload | 1,795/550kg | 1,795/480kg |
| Turning circle/drag coefficient | 11.6 metres/0.28Cd | 11.1 metres/N/A |
| Basic warranty (miles)/recovery | 3yrs (60,000)/3yrs | 3yrs (unltd)/4yrs |
| Service intervals/UK dealers | Variable/121 | Variable/136 |
| Driver Power manufacturer/dealer pos. | 15th/18th | 8th/10th |
| Euro NCAP: Adult/child/ped./stars | N/A | N/A |
| 0-60/30-70mph | 4.4/3.8 secs | 4.4/3.8 secs |
| 30-50mph in 3rd/4th | 2.9/3.9 secs | 2.6/4.0 secs |
| 50-70mph in 5th/6th/7th | 5.4/7.0/10.2 secs | 5.8/7.9 secs/N/A |
| Top speed/rpm at 70mph | 155mph/2,200rpm | 155mph/2,000rpm |
| Braking 70-0/60-0/30-0mph | 49.3/35.3/10.3m | 45.8/33.4/9.2m |
| Noise outside/idle/30/70mph | 68/46/58/67dB | 67/47/59/66dB |
| Auto Express econ (mpg/mpl)/range | 16.0/3.7/215 miles | 14.8/3.3/215 miles |
| Govt urban/extra-urban/combined | 19.3/33.2/26.4mpg | 15.2/33.2/23.2mpg |
| Govt urban/extra-urban/combined | 4.3/7.4/5.9mpl | 3.4/7.4/5.2mpl |
| Actual/claimed CO2/tax bracket | 408/249g/km/35% | 441/285g/km/35% |
| Airbags/Isofix/rear parking sensors | Six/yes/yes | Six/yes/yes |
| Climate control/leather/heated seats | Yes/yes/£300 | Yes/yes/yes |
| Metallic paint/xenons/ceramic brakes | £615/yes/£4,000 | Yes/yes/no |
| Sat-nav/USB connection/Bluetooth | Yes/yes/yes | Yes/yes/yes |
| Variable active damping/cruise ctrl | £1,710/yes | No/yes |
