UK vs Germany — 1953 vs 1955
| Ace | 550 Spyder | |
|---|---|---|
| Horsepower | 102 hp | 110 hp |
| Torque | 105 lb-ft | 90 lb-ft |
| Engine Size | 1,991 cc | 1,498 cc |
| 0-60 mph | 11.4 sec | 8.5 sec |
| Top Speed | 117 mph | 137 mph |
| ¼ Mile | 17.5 sec | 16.0 sec |
| Weight | 1,850 lbs | 1,300 lbs |
| Wheelbase | 2,286 mm | 2,100 mm |
| Length | 3,835 mm | 3,700 mm |
| Units Produced | 723 | 90 |
| Original MSRP | $3,854 | $6,500 |
| Value (Excellent) | $350,000 | $7,000,000 |
| Collectibility | 9/10 | 10/10 |
| Rarity | 8/10 | 10/10 |
The 1955 Porsche 550 Spyder emerges ahead in most objective measures, offering quicker acceleration, higher top speed, lighter weight. The 1953 AC Ace 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.
Putting the 1953 AC Ace against the 1955 Porsche 550 Spyder is a comparison that enthusiasts have debated for decades. Each car reflects distinct design philosophies shaped by different automotive cultures — UK versus Germany. On paper, the two are remarkably close in power output, with the 1953 AC Ace producing 102 hp and the 1955 Porsche 550 Spyder delivering 110 hp. Under the hood, the contrast is notable: the AC Ace uses a Inline-6 SOHC 12V displacing 1,991 cc, while the Porsche 550 Spyder relies on a Flat-4 DOHC 8V with 1,498 cc. In the sprint to 60 mph, the 1955 Porsche 550 Spyder edges ahead at 8.5 seconds versus 11.4 seconds. The Porsche 550 Spyder carries a weight advantage, tipping the scales 550 lbs lighter. Rarity plays a significant role here — with only 90 units built, the 1955 Porsche 550 Spyder is considerably scarcer than the AC Ace's 723 examples. On the collector market, the 1955 Porsche 550 Spyder commands a significant premium over the 1953 AC Ace, reflecting differences in prestige and rarity.