Germany vs Germany — 1999 vs 1991
| RS4 Avant B5 | S4 C4 UrS4 2.2 20V Turbo | |
|---|---|---|
| Horsepower | 375 hp | 230 hp |
| Torque | 325 lb-ft | 258 lb-ft |
| Engine Size | 2,671 cc | 2,226 cc |
| 0-60 mph | 4.9 sec | 5.9 sec |
| Top Speed | 155 mph | 155 mph |
| ¼ Mile | 13.2 sec | 14.3 sec |
| Weight | — | 3,704 lbs |
| Wheelbase | 2,617 mm | 2,693 mm |
| Length | 4,525 mm | 4,790 mm |
| Units Produced | 6,030 | 7,298 |
| Original MSRP | — | $43,950 |
| Value (Excellent) | $90,000 | $60,000 |
| Collectibility | 5/10 | 7/10 |
| Rarity | 7/10 | 6/10 |
It's a closely fought contest. The 1999 Audi RS4 Avant B5 brings more power, quicker acceleration to the table, and the 1991 Audi S4 C4 UrS4 2.2 20V Turbo answers with stronger collectibility, better value. Both are excellent machines that reward their owners in different ways — there's no wrong answer here.
Audi has long offered a diverse lineup, and comparing the 1999 Audi RS4 Avant B5 with the 1991 Audi S4 C4 UrS4 2.2 20V Turbo highlights the breadth of the marque's engineering philosophy. The 1999 Audi RS4 Avant B5 holds a clear advantage in raw power with 375 hp compared to 230 hp, a 145-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Audi RS4 uses a V6 DOHC 30V Twin-Turbocharged displacing 2,671 cc, while the Audi S4 relies on a Inline-5 DOHC 20V Turbo with 2,226 cc. In the sprint to 60 mph, the 1999 Audi RS4 Avant B5 edges ahead at 4.9 seconds versus 5.9 seconds. From a collectibility standpoint, the 1991 Audi S4 C4 UrS4 2.2 20V Turbo rates higher among enthusiasts and auction houses.