Japan vs Japan — 1978 vs 1974
| RX-7 SA22C (FB) | RX-4 Coupe | |
|---|---|---|
| Horsepower | 100 hp | 110 hp |
| Torque | 101 lb-ft | 119 lb-ft |
| Engine Size | 1,146 cc | 1,308 cc |
| 0-60 mph | 9.0 sec | 9.8 sec |
| Top Speed | 121 mph | 115 mph |
| ¼ Mile | 16.5 sec | 17.2 sec |
| Weight | — | 2,535 lbs |
| Wheelbase | 2,420 mm | 2,510 mm |
| Length | 4,285 mm | 4,530 mm |
| Units Produced | 474,565 | 86,522 |
| Original MSRP | — | $4,795 |
| Value (Excellent) | $30,000 | $35,000 |
| Collectibility | 5/10 | 6/10 |
| Rarity | 4/10 | 7/10 |
This matchup is remarkably close. The 1978 Mazda RX-7 SA22C (FB) offers quicker acceleration, higher top speed, while the 1974 Mazda RX-4 Coupe counters with greater rarity, stronger collectibility. 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 1974 Mazda RX-4 Coupe 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 1974 Mazda RX-4 Coupe 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 Rotary (Wankel) 13B with 1,308 cc. In the sprint to 60 mph, the 1978 Mazda RX-7 SA22C (FB) edges ahead at 9.0 seconds versus 9.8 seconds. Rarity plays a significant role here — with only 86,522 units built, the 1974 Mazda RX-4 Coupe is considerably scarcer than the Mazda RX-7's 474,565 examples. Both trade at comparable values on the collector market, making the choice between them largely one of personal preference.