Germany vs Germany — 1993 vs 1985
| S4 C4 UrS4 | Sport Quattro S1 | |
|---|---|---|
| Horsepower | 227 hp | 306 hp |
| Torque | 258 lb-ft | 258 lb-ft |
| Engine Size | 2,226 cc | 2,133 cc |
| 0-60 mph | 5.9 sec | 4.5 sec |
| Top Speed | 155 mph | 155 mph |
| ¼ Mile | 14.3 sec | 13.0 sec |
| Weight | 3,770 lbs | 2,403 lbs |
| Wheelbase | 2,692 mm | 2,205 mm |
| Length | 4,790 mm | 4,100 mm |
| Units Produced | 7,865 | 164 |
| Original MSRP | $43,750 | — |
| Value (Excellent) | $55,000 | $750,000 |
| Collectibility | 7/10 | 10/10 |
| Rarity | 6/10 | 10/10 |
The 1985 Audi Sport Quattro S1 emerges ahead in most objective measures, offering more power, quicker acceleration, lighter weight. The 1993 Audi S4 C4 UrS4 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 1993 Audi S4 C4 UrS4 and 1985 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 1985 Audi Sport Quattro S1 holds a clear advantage in raw power with 306 hp compared to 227 hp, a 79-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Audi S4 uses a Inline-5 DOHC 20V Turbocharged displacing 2,226 cc, while the Audi Sport Quattro relies on a Inline-5 DOHC Turbo with 2,133 cc. In the sprint to 60 mph, the 1985 Audi Sport Quattro S1 edges ahead at 4.5 seconds versus 5.9 seconds. The Audi Sport Quattro carries a weight advantage, tipping the scales 1367 lbs lighter. Rarity plays a significant role here — with only 164 units built, the 1985 Audi Sport Quattro S1 is considerably scarcer than the Audi S4's 7,865 examples. On the collector market, the 1985 Audi Sport Quattro S1 commands a significant premium over the 1993 Audi S4 C4 UrS4, reflecting differences in prestige and rarity. From a collectibility standpoint, the 1985 Audi Sport Quattro S1 rates higher among enthusiasts and auction houses.