Acura MDX vs BMW X5
2026 Acura MDX vs 2026 BMW X5 — two rivals compared on efficiency, size, safety and reliability.
The short version
The BMW X5 is more fuel-efficient: 25 vs 22 MPG combined in its best version.
That works out to about $450 a year less in fuel for the BMW X5 (EPA estimate, 15,000 miles).
The Acura MDX is the bigger car, about 6 inches longer.
Across all model years since 2005, the Acura MDX has had fewer recall campaigns (34 vs 85).
The two cars
The 2026 Acura MDX is a small SUV offered with 2 engines (3.5L 6-cyl and 3.0L 6-cyl turbo) and front-wheel drive and all-wheel drive. It measures about 198 inches long and 79 inches wide on a 114-inch wheelbase, with a curb weight of roughly 4,506 lb (4dr SUV AWD).
The 2026 BMW X5 is a standard SUV offered with 2 engines (3.0L 6-cyl turbo and 4.4L 8-cyl turbo), including a hybrid version and rear-wheel drive and all-wheel drive. It measures about 194 inches long and 79 inches wide on a 117-inch wheelbase, with a curb weight of roughly 5,558 lb (M60i 4dr SUV).
Buying used? The 2024 MDX and the 2023 X5 have the fewest problems in our data; avoid the 2016 MDX and the 2019 X5.
Basics
Efficiency
Performance & space
Safety & reliability
Interest
Green = clearly better. Prices are not included. How we calculate this →
Which one should you choose?
Choose the Acura MDX if…
- You want more room (6 in longer)
- You put reliability history first (34 vs 85 recalls since 2005)
Choose the BMW X5 if…
- You want lower fuel bills (25 vs 22 MPG)
- You want more power (up to 523 vs 290 hp)
- You want something easier to park (6 in shorter)
- You want a hybrid or electric option
Pros & cons of each
2026 Acura MDX
- AWD / 4WD available
- Lots of standard safety tech4 of 5 key driver aids standard on the versions we checked.
- Below-average fuel economyBest version gets 22 MPG combined, 27% below the 2026 small SUV average of 30.2 MPG.
- Premium fuel requiredEvery gasoline version is rated for premium, which raises running costs.
- Modest powerUp to 290 hp, versus about 409 hp for similar 2026 models.
2026 BMW X5
- Excellent fuel economyUp to 25 MPG combined — 15% better than the average 2026 standard SUV (21.7 MPG).
- Hybrid version availableOffered as a hybrid and plug-in hybrid as well as gas.
- AWD / 4WD available
- Premium fuel requiredEvery gasoline version is rated for premium, which raises running costs.
Full 2026 Acura MDX specs →Full 2026 BMW X5 specs →Compare fuel costs for your driving →Compare size & garage fit →

