DecodedCarsBMW 5 Series vs Genesis G80
2026 BMW 5 Series vs 2026 Genesis G80 — two midsize cars compared on efficiency, size, safety and reliability.
The short version
The BMW 5 Series is more fuel-efficient: 31 vs 23 MPG combined in its best version.
That works out to about $1,850 a year less in fuel for the Genesis G80 (EPA estimate, 15,000 miles).
The BMW 5 Series is the bigger car, about 3 inches longer.
Across all model years since 2005, the BMW 5 Series has had fewer recall campaigns (9 vs 16).
The two cars
The 2026 BMW 5 Series is a midsize car offered with 2 engines (2.0L 4-cyl turbo and 3.0L 6-cyl turbo), including a hybrid version and rear-wheel drive and all-wheel drive. It measures about 199 inches long and 75 inches wide on a 118-inch wheelbase, with a curb weight of roughly 4,158 lb (5-Series 530i Xdrive 4dr Sedan).
The 2026 Genesis G80 is a midsize car offered with 2 engines (2.5L 4-cyl turbo and 3.5L 6-cyl turbo) and all-wheel drive. It measures about 197 inches long and 76 inches wide on a 119-inch wheelbase, with a curb weight of roughly 4,295 lb (4dr Sedan AWD 2.5t).
Buying used? The 2024 5 Series and the 2024 G80 have the fewest problems in our data; avoid the 2018 G80.
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 BMW 5 Series if…
- You want lower fuel bills (31 vs 23 MPG)
- You put reliability history first (9 vs 16 recalls since 2005)
Choose the Genesis G80 if…
- You want an EV with more range (300 miles)
Pros & cons of each
2026 BMW 5 Series
- 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.
2026 Genesis G80
- Long EV rangeUp to 300 miles on a charge (EPA).
- Electric version availableOffered as a electric as well as gas.
- Lots of standard safety tech5 of 5 key driver aids standard on the versions we checked.
- Below-average fuel economyBest version gets 23 MPG combined, 26% below the 2026 midsize car average of 31.2 MPG.
- Premium fuel requiredEvery gasoline version is rated for premium, which raises running costs.
Full 2026 BMW 5 Series specs →Full 2026 Genesis G80 specs →Compare fuel costs for your driving →Compare size & garage fit →