Japan vs Japan — 1978 vs 1972
| RX-7 SA22C (FB) | RX-4 | |
|---|---|---|
| Horsepower | 100 hp | 110 hp |
| Torque | 101 lb-ft | 102 lb-ft |
| Engine Size | 1,146 cc | 1,146 cc |
| 0-60 mph | 9.0 sec | 10.5 sec |
| Top Speed | 121 mph | 112 mph |
| ¼ Mile | 16.5 sec | 17.5 sec |
| Weight | — | 2,535 lbs |
| Wheelbase | 2,420 mm | 2,510 mm |
| Length | 4,285 mm | 4,410 mm |
| Units Produced | 474,565 | 71,690 |
| Value (Excellent) | $30,000 | — |
| Collectibility | 5/10 | 5/10 |
| Rarity | 4/10 | 5/10 |
This matchup is remarkably close. The 1978 Mazda RX-7 SA22C (FB) offers quicker acceleration, higher top speed, while the 1972 Mazda RX-4 counters with greater rarity. Neither holds a decisive advantage, making this a true enthusiast's dilemma. Your choice ultimately depends on which driving philosophy resonates more with you.
The Mazda RX-7 lineage tells a fascinating story of automotive evolution. Comparing the 1978 Mazda RX-7 SA22C (FB) with the 1972 Mazda RX-4 reveals how Mazda refined and reimagined one of its most important nameplates over the years. On paper, the two are remarkably close in power output, with the 1978 Mazda RX-7 SA22C (FB) producing 100 hp and the 1972 Mazda RX-4 delivering 110 hp. Under the hood, the contrast is notable: the Mazda RX-7 uses a Wankel Rotary 12A displacing 1,146 cc, while the Mazda RX-4 relies on a Twin-rotor Wankel with 1,146 cc. In the sprint to 60 mph, the 1978 Mazda RX-7 SA22C (FB) edges ahead at 9.0 seconds versus 10.5 seconds. Rarity plays a significant role here — with only 71,690 units built, the 1972 Mazda RX-4 is considerably scarcer than the Mazda RX-7's 474,565 examples.