Germany vs Germany — 2003 vs 2006
| RS6 C5 Avant | RS4 Avant B7 4.2 V8 | |
|---|---|---|
| Horsepower | 450 hp | 420 hp |
| Torque | 413 lb-ft | 317 lb-ft |
| Engine Size | 4,172 cc | 4,163 cc |
| 0-60 mph | 4.4 sec | 4.5 sec |
| Top Speed | 155 mph | 155 mph |
| ¼ Mile | 12.9 sec | 12.8 sec |
| Weight | 4,266 lbs | 3,770 lbs |
| Wheelbase | 2,760 mm | 2,648 mm |
| Length | 4,843 mm | 4,586 mm |
| Units Produced | 4,315 | — |
| Original MSRP | $84,900 | $71,900 |
| Value (Excellent) | $65,000 | $85,000 |
| Collectibility | 8/10 | 8/10 |
| Rarity | 7/10 | 7/10 |
Two outstanding machines, each with compelling strengths. The 2003 Audi RS6 C5 Avant excels in quicker acceleration, better value, while the 2006 Audi RS4 Avant B7 4.2 V8 stands out for lighter weight. The best advice? Drive both if you can, then follow your instincts.
The 2003 Audi RS6 C5 Avant and 2006 Audi RS4 Avant B7 4.2 V8 share a manufacturer in Audi, but that's where the similarities get interesting. These two models reveal the versatility and ambition of the Audi brand. The 2003 Audi RS6 C5 Avant holds a clear advantage in raw power with 450 hp compared to 420 hp, a 30-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Audi RS6 uses a V8 DOHC 32V Twin-Turbo displacing 4,172 cc, while the Audi RS4 Avant relies on a V8 DOHC 32V with 4,163 cc. In the sprint to 60 mph, the 2003 Audi RS6 C5 Avant edges ahead at 4.4 seconds versus 4.5 seconds. The Audi RS4 Avant carries a weight advantage, tipping the scales 496 lbs lighter. Whether you prioritize driving dynamics, heritage, or aesthetic appeal, both contenders make a strong case for themselves.