The Mercedes-Benz GLB should be reasonably easy to live with when its running costs and equipment fit your routine. Useful ownership information includes 2025 GLB 250 4MATIC AMG Line FL: 7.6 L/100km; 2025 GLB 200 Progressive Line FL: 6.9 L/100km. For most buyers, the right car is the one that keeps commuting, family errands and weekend trips simple rather than merely looking strong on paper.