Germany vs Germany — 1991 vs 1984
| S4 C4 UrS4 2.2 20V Turbo | Sport Quattro S1 | |
|---|---|---|
| Horsepower | 230 hp | 306 hp |
| Torque | 258 lb-ft | 258 lb-ft |
| Engine Size | 2,226 cc | 2,133 cc |
| 0-60 mph | 5.9 sec | 4.8 sec |
| Top Speed | 155 mph | 155 mph |
| ¼ Mile | 14.3 sec | 13.2 sec |
| Weight | 3,704 lbs | 2,866 lbs |
| Wheelbase | 2,693 mm | 2,224 mm |
| Length | 4,790 mm | 4,240 mm |
| Units Produced | 7,298 | 214 |
| Original MSRP | $43,950 | $110,000 |
| Value (Excellent) | $60,000 | $800,000 |
| Collectibility | 7/10 | 10/10 |
| Rarity | 6/10 | 10/10 |
The 1984 Audi Sport Quattro S1 emerges ahead in most objective measures, offering more power, quicker acceleration, lighter weight. The 1991 Audi S4 C4 UrS4 2.2 20V Turbo counters with better value, but the numbers favor its rival. Still, both are remarkable machines, and the final choice often comes down to which driving experience speaks to you.
Within the Audi stable, the 1991 Audi S4 C4 UrS4 2.2 20V Turbo and 1984 Audi Sport Quattro S1 represent different approaches to performance and purpose. Both carry the Audi badge, yet each carves out its own distinct identity. The 1984 Audi Sport Quattro S1 holds a clear advantage in raw power with 306 hp compared to 230 hp, a 76-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Audi S4 uses a Inline-5 DOHC 20V Turbo displacing 2,226 cc, while the Audi Sport Quattro relies on a Inline-5 with 2,133 cc. In the sprint to 60 mph, the 1984 Audi Sport Quattro S1 edges ahead at 4.8 seconds versus 5.9 seconds. The Audi Sport Quattro carries a weight advantage, tipping the scales 838 lbs lighter. Rarity plays a significant role here — with only 214 units built, the 1984 Audi Sport Quattro S1 is considerably scarcer than the Audi S4's 7,298 examples. On the collector market, the 1984 Audi Sport Quattro S1 commands a significant premium over the 1991 Audi S4 C4 UrS4 2.2 20V Turbo, reflecting differences in prestige and rarity. From a collectibility standpoint, the 1984 Audi Sport Quattro S1 rates higher among enthusiasts and auction houses.