Acura RLX vs Audi S4
The Acura RLX returns better fuel economy, carries more luggage and makes more power, while the Audi S4 starts about $7,495 lower. Here is how the two compare on the numbers that decide most purchases.
| Measure | Acura RLX | Audi S4 |
|---|---|---|
| Price rangeOriginal sticker prices across all trims. | $55,895–$58,150 | $48,400–$60,095✓ |
| Years covered | 2015–2026 | 2015–2026 |
| Fuel economyBest figure quoted across the range. | 30 mpg✓ | 24 mpg |
| Power | 377 hp✓ | 354 hp |
| Cargo space | 14.9 cu ft✓ | 13 cu ft |
| Seats | 5 | 5 |
| Fuel types | Petrol | Petrol |
| Drivetrains | FWD, AWD | AWD |
| Safety rating | — | — |
| Reliability | — | — |
| Insurance (yr) | — | — |
| Resale value | — | — |
| Recalls | 1 recall (2023 campaign 23V858000 — fuel pump; campaign lists certain 2013–2023 Honda and Acura vehicles including the RLX) | — |
Acura RLX vs Audi S4: common questions
Is the Acura RLX cheaper than the Audi S4?
No — the Audi S4 has the lower entry price. The Acura RLX spans $55,895–$58,150 and the Audi S4 spans $48,400–$60,095, based on original sticker prices across all trims.
Which is more fuel efficient, the Acura RLX or the Audi S4?
The Acura RLX is more efficient, quoting 30 mpg against 24 mpg for the other.
Which has more cargo space, the Acura RLX or the Audi S4?
The Acura RLX holds more, at 14.9 cubic feet versus 13.
Which should I buy, the Acura RLX or the Audi S4?
It depends on what you weight most. The Acura RLX returns better fuel economy, carries more luggage and makes more power, while the Audi S4 starts about $7,495 lower. Here is how the two compare on the numbers that decide most purchases. Cars4Real shows both cars' full trim tables, owner reviews, safety records and depreciation so you can judge against your own priorities rather than a generic verdict.