DecodedCarsMercedes-Benz GLB-Class vs Porsche Macan
2026 Mercedes-Benz GLB-Class vs 2026 Porsche Macan — two rivals compared on efficiency, size, safety and reliability.
The short version
The Mercedes-Benz GLB-Class is more fuel-efficient: 28 vs 21 MPG combined in its best version.
That works out to about $2,250 a year less in fuel for the Porsche Macan (EPA estimate, 15,000 miles).
The Porsche Macan is the bigger car, about 3 inches longer.
Across all model years since 2005, the Mercedes-Benz GLB-Class has had fewer recall campaigns (0 vs 15).
The two cars
The 2026 Mercedes-Benz GLB-Class is a special purpose vehicle offered with a 2.0L 4-cyl turbo engine, including a hybrid version and front-wheel drive and all-wheel drive. It measures about 182 inches long and 72 inches wide on a 111-inch wheelbase, with a curb weight of roughly 3,759 lb (250 4matic 4dr SUV).
The 2026 Porsche Macan is a small SUV offered with 2 engines (2.0L 4-cyl turbo and 2.9L 6-cyl turbo) and rear-wheel drive and all-wheel drive. It measures about 185 inches long and 76 inches wide on a 111-inch wheelbase, with a curb weight of roughly 4,098 lb (4dr SUV AWD).
Buying used? The 2024 GLB-Class and the 2022 Macan have the fewest problems in our data; avoid the 2017 Macan.
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 Mercedes-Benz GLB-Class if…
- You want lower fuel bills (28 vs 21 MPG)
- You put reliability history first (0 vs 15 recalls since 2005)
Choose the Porsche Macan if…
- You want an EV with more range (332 miles)
Pros & cons of each
2026 Mercedes-Benz GLB-Class
- Hybrid version availableOffered as a hybrid as well as gas.
- AWD / 4WD available
- Premium fuel requiredEvery gasoline version is rated for premium, which raises running costs.
2026 Porsche Macan
- Long EV rangeUp to 332 miles on a charge (EPA).
- Electric version availableOffered as a electric as well as gas.
- AWD / 4WD available
- Below-average fuel economyBest version gets 21 MPG combined, 30% below the 2026 small SUV average of 30.2 MPG.
- Premium fuel requiredEvery gasoline version is rated for premium, which raises running costs.
Full 2026 Mercedes-Benz GLB-Class specs →Full 2026 Porsche Macan specs →Compare fuel costs for your driving →Compare size & garage fit →