DecodedCarsAcura RDX vs BMW X3
2026 Acura RDX vs 2026 BMW X3 — two small SUVs compared on efficiency, size, safety and reliability.
The short version
The BMW X3 is more fuel-efficient: 29 vs 23 MPG combined in its best version.
That works out to about $700 a year less in fuel for the BMW X3 (EPA estimate, 15,000 miles).
Across all model years since 2005, the Acura RDX has had fewer recall campaigns (15 vs 62).
The two cars
The 2026 Acura RDX is a small SUV offered with a 2.0L 4-cyl turbo engine and all-wheel drive. It measures about 188 inches long and 75 inches wide on a 108-inch wheelbase, with a curb weight of roughly 4,090 lb (A-Spec 4dr SUV).
The 2026 BMW X3 is a small SUV offered with 2 engines (2.0L 4-cyl turbo and 3.0L 6-cyl turbo), including a hybrid version and all-wheel drive. It measures about 187 inches long and 76 inches wide on a 113-inch wheelbase, with a curb weight of roughly 4,176 lb (30 Xdrive 4dr SUV).
Buying used? The 2023 RDX and the 2023 X3 have the fewest problems in our data; avoid the 2019 RDX and the 2020 X3.
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 RDX if…
- You put reliability history first (15 vs 62 recalls since 2005)
Choose the BMW X3 if…
- You want lower fuel bills (29 vs 23 MPG)
- You want more power (up to 393 vs 272 hp)
- You want a hybrid or electric option
Pros & cons of each
2026 Acura RDX
- Lots of standard safety tech5 of 5 key driver aids standard on the versions we checked.
- Premium fuel requiredEvery gasoline version is rated for premium, which raises running costs.
- Modest powerUp to 272 hp, versus about 349 hp for similar 2026 models.
2026 BMW X3
- Hybrid version availableOffered as a hybrid as well as gas.
- Premium fuel requiredEvery gasoline version is rated for premium, which raises running costs.
Full 2026 Acura RDX specs →Full 2026 BMW X3 specs →Compare fuel costs for your driving →Compare size & garage fit →