Audi S6 vs BMW X4 M
The Audi S6 starts about $2,500 lower and returns better fuel economy, while the BMW X4 M carries more luggage and makes more power. Here is how the two compare on the numbers that decide most purchases.
| Measure | Audi S6 | BMW X4 M |
|---|---|---|
| Price rangeOriginal sticker prices across all trims. | $70,900–$81,495✓ | $73,400–$80,400 |
| Years covered | 2015–2025 | 2020–2024 |
| Fuel economyBest figure quoted across the range. | 22 mpg✓ | 17 mpg |
| Power | 450 hp | 503 hp✓ |
| Cargo space | 14.1 cu ft | 18.5 cu ft✓ |
| Seats | 5 | 5 |
| Fuel types | Petrol | Petrol |
| Drivetrains | AWD, 4WD | AWD |
| Safety rating | — | Not rated (NHTSA) |
| Reliability | — | — |
| Insurance (yr) | — | — |
| Resale value | — | — |
| Recalls | — | — |
Audi S6 vs BMW X4 M: common questions
Is the Audi S6 cheaper than the BMW X4 M?
Yes — the Audi S6 has the lower entry price. The Audi S6 spans $70,900–$81,495 and the BMW X4 M spans $73,400–$80,400, based on original sticker prices across all trims.
Which is more fuel efficient, the Audi S6 or the BMW X4 M?
The Audi S6 is more efficient, quoting 22 mpg against 17 mpg for the other.
Which has more cargo space, the Audi S6 or the BMW X4 M?
The BMW X4 M holds more, at 18.5 cubic feet versus 14.1.
Which should I buy, the Audi S6 or the BMW X4 M?
It depends on what you weight most. The Audi S6 starts about $2,500 lower and returns better fuel economy, while the BMW X4 M carries more luggage and makes more power. 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.