Generations: what actually changed when you buy used vs current

Buy 1 generation if you need a full measured sheet (city/highway, Euro 6, acceleration on every diesel). Buy restyling only if you specifically want the new petrol GLB220 2.0 DCT 4Matic — knowing that several of its performance cells are not measured.

1 generation (2019-04-01 to 2023-02-28) is the only complete production window with city, highway and mixed fuel figures on most versions, Euro 6 on every listed car, and a measured 0–100 / top speed for all seven names. Body: SUV 5-doors. Version count: 7.

1 generation, restyling (from 2023-03-01; end not measured) keeps the same SUV 5-doors body and the same named engines for the carry-over cars. Version count: 8, because petrol GLB220 2.0 DCT 4Matic (190 hp, 300 Nm) appears here and has no 1 generation counterpart. Horsepower of the carry-overs is unchanged. What moves is economy, CO2, and a handful of kW/rpm labels. Eco class on restyling is not measured. City and highway mpg on restyling are not measured (mixed is). For GLB220 2.0 DCT 4Matic, 0–100, top speed, kerb weight and gross weight are not measured.

Buy 1 generation if you need a full measured sheet (city/highway, Euro 6, acceleration on every diesel). Buy restyling only if you specifically want the new petrol GLB220 2.0 DCT 4Matic — knowing that several of its performance cells are not measured.

Engine specs: every version, named as in the data

All engines here are 4 cylinders, Inline, Turbo, Front, transverse, Robotic gearbox. Petrol uses Direct injection (direct) and fuel 95; diesel fuel label is Diesel on 1 generation and 95 on restyling (as in the data). Rear brakes: Disc; front: Ventilated disc. Suspension both ends: Independent, spring. Ground clearance: 135 mm. Tank: 52 L. Wheel sizes: not measured.

1 generation

Versionhp / kWNmccFuelGearsDrive
GLB180 1.3 DCT136 / 1002001332Gasoline7FWD
GLB200 1.3 DCT163 / 1202501332Gasoline7FWD
GLB250 2.0 DCT 4Matic224 / 1653501991Gasoline8AWD
GLB180d 2.0 DCT116 / 852801950Diesel8FWD
GLB200d 2.0 DCT150 / 1103201950Diesel8FWD
GLB200d 2.0 DCT 4Matic150 / 1103201950Diesel8AWD
GLB220d 2.0 DCT 4Matic190 / 1404001950Diesel8AWD

1 generation, restyling — same names except the extra petrol, plus two cars both called GLB200d 2.0 DCT (distinguish by drive: 150 hp FWD vs 150 hp AWD).

Versionhp / kWNmccFuelGearsDrive
GLB180 1.3 DCT136 / 1002001332Gasoline7FWD
GLB200 1.3 DCT163 / 1192501332Gasoline7FWD
GLB220 2.0 DCT 4Matic190 / 1393001991Gasoline8AWD
GLB250 2.0 DCT 4Matic224 / 1643501991Gasoline8AWD
GLB180d 2.0 DCT116 / 852801950Diesel8FWD
GLB200d 2.0 DCT (FWD)150 / 1103201950Diesel8FWD
GLB200d 2.0 DCT (AWD)150 / 1103201950Diesel8AWD
GLB220d 2.0 DCT 4Matic190 / 1394001950Diesel8AWD

Specific output (hp per litre of displacement): GLB200 1.3 DCT 163 / 1.332 ≈ 122 hp/L; GLB180 1.3 DCT 136 / 1.332 ≈ 102 hp/L; GLB250 2.0 DCT 4Matic 224 / 1.991 ≈ 112 hp/L; restyling GLB220 2.0 DCT 4Matic 190 / 1.991 ≈ 95 hp/L; diesels on 1.950 L: GLB180d 2.0 DCT ≈ 59 hp/L, GLB200d 2.0 DCT ≈ 77 hp/L, GLB220d 2.0 DCT 4Matic ≈ 97 hp/L. The 1332 cc petrol is the densest; the 116 hp diesel is the least dense. That is the arithmetic of the catalogue, not a reliability claim.

Performance, mpg and what the extra step buys

1 generation — 0–100 km/h / top speed / city / highway / mixed L/100 km / CO2

1 generation, restyling — city and highway not measured on every version.

GLB180 1.3 DCT vs GLB200 1.3 DCT (same 1555 kg, same 1332 cc, same FWD, same 7-speed Robotic): +27 hp and +50 Nm for 0.3 s quicker (9.4 vs 9.1) and +7 km/h (200 vs 207). On 1 generation mixed fuel the 163 hp car uses 6.2 vs 5.0 — 1.2 L/100 km more — and CO2 stays 142 on both. Restyling mixed: 7.6 vs 6.9. The 136 hp car is the cheaper-to-run 1.3; the 163 hp car is 27 hp for 0.3 s, not a different class.

GLB180d 2.0 DCT vs GLB200d 2.0 DCT (both FWD, 1680 kg): +34 hp and +40 Nm cuts 2.3 s (11.3 vs 9.0) and adds 16 km/h (188 vs 204). Mixed on 1 generation is 5.0 vs 5.0; CO2 132 vs 133. The 116 hp diesel is the slowest GLB in the data. If you already accept diesel, GLB200d 2.0 DCT FWD is the same mixed figure with a 2.3 s gap — that is the largest 0–100 step inside one fuel family.

AWD tax on the same 150 hp diesel: GLB200d 2.0 DCT 4Matic vs FWD GLB200d 2.0 DCT is +55 kg (1735 vs 1680), +0.3 s (9.3 vs 9.0), −3 km/h (201 vs 204), mixed +0.5 L (5.5 vs 5.0) on 1 generation and +0.3 L (6.4 vs 6.1) on restyling, CO2 +12 g (145 vs 133) then +8 g (168 vs 160). Gross weight +55 kg (2250 vs 2195). You pay mass and 0.3 s for AWD, not extra horsepower.

GLB220d 2.0 DCT 4Matic vs GLB200d 2.0 DCT 4Matic: same 1735 kg, same AWD, same 8-speed Robotic, same 1950 cc. +40 hp (190 vs 150), +80 Nm (400 vs 320), −1.7 s (7.6 vs 9.3), +16 km/h (217 vs 201). Mixed 5.5 vs 5.5 on 1 generation; restyling 6.5 vs 6.4. CO2 146 vs 145, then 170 vs 168. This is the rare step where speed rises and mixed mpg does not. If the catalogue had prices they would belong here; they are not measured.

GLB250 2.0 DCT 4Matic vs GLB220d 2.0 DCT 4Matic: petrol 224 hp / 350 Nm vs diesel 190 hp / 400 Nm. The diesel has 50 Nm more. 0–100: 6.9 vs 7.6 s (−0.7 s for petrol). Top speed 236 vs 217. Weight 1670 vs 1735 (−65 kg). Mixed 7.4 vs 5.5 on 1 generation (+1.9 L); restyling 8.5 vs 6.5 (+2.0 L). CO2 169 vs 146, then both 193 vs 170. GLB250 2.0 DCT 4Matic is the horsepower and top-speed choice; GLB220d 2.0 DCT 4Matic is the torque and mpg choice among AWD cars.

Restyling petrol GLB220 2.0 DCT 4Matic vs GLB250 2.0 DCT 4Matic: 190 vs 224 hp (−34 hp), 300 vs 350 Nm, same 1991 cc, same AWD, same 8 gears, same mixed 8.5 and same 193 g/km. 0–100 and top speed of GLB220 2.0 DCT 4Matic not measured; GLB250 2.0 DCT 4Matic remains 6.9 s / 236 km/h. Weight of GLB220 2.0 DCT 4Matic not measured vs 1670 kg. Same measured economy as the 224 hp car with 34 hp less — there is no mpg prize for stepping down to 190 hp petrol AWD in this sheet.

1 generation vs restyling mixed mpg (same names): GLB180 1.3 DCT 5.0 → 6.9 (+1.9); GLB200 1.3 DCT 6.2 → 7.6 (+1.4); GLB250 2.0 DCT 4Matic 7.4 → 8.5 (+1.1); GLB180d 2.0 DCT 5.0 → 6.1 (+1.1); GLB200d 2.0 DCT FWD 5.0 → 6.1 (+1.1); GLB200d 2.0 DCT 4Matic / restyling AWD GLB200d 2.0 DCT 5.5 → 6.4 (+0.9); GLB220d 2.0 DCT 4Matic 5.5 → 6.5 (+1.0). Power and 0–100 of the carry-overs do not improve. The restyling sheet is heavier on mixed litres, not on horsepower.

kW labels that move by 1: restyling GLB200 1.3 DCT 119 kW vs 120; GLB250 2.0 DCT 4Matic 164 vs 165; GLB220d 2.0 DCT 4Matic 139 vs 140. Horsepower is unchanged.

Dimensions, weight and kg per horsepower

Ground clearance is 135 mm on every version in both periods. Tank 52 L on every version. Wheel size not measured. Body SUV 5-doors.

Kerb / gross (kg), 1 generation (restyling kerb matches where measured):

Kg per hp (kerb / hp), 1 generation:

The 116 hp diesel carries the most mass per horsepower; the 224 hp petrol carries the least. Clearance does not change with AWD or restyling in this data.

Which Mercedes GLB version to choose

Need the lowest kerb weight and a 95 petrol with Direct injection (direct): GLB180 1.3 DCT or GLB200 1.3 DCT. Both 1555 kg, FWD, 7-speed Robotic, 1332 cc. Pick 136 hp if mixed litres matter (5.0 on 1 generation; city/highway not measured). Pick 163 hp if 0.3 s and 7 km/h are the point. Restyling mixed is 6.9 and 7.6 — buy 1 generation if the measured 5.0 / 6.2 mixed figures are why you wanted the 1.3.

Need FWD diesel without the slowest 0–100: skip GLB180d 2.0 DCT (11.3 s, 188 km/h, 14.5 kg/hp) unless 116 hp is the constraint. GLB200d 2.0 DCT FWD is 150 hp, 9.0 s, 204 km/h, same 5.0 mixed and 1680 kg on 1 generation.

Need AWD: four named cars. GLB200d 2.0 DCT 4Matic (and restyling GLB200d 2.0 DCT AWD) is 150 hp for 1735 kg — AWD without extra power. GLB220d 2.0 DCT 4Matic is the AWD diesel that actually changes the clock: 190 hp, 400 Nm, 7.6 s, 217 km/h, mixed still 5.5 on 1 generation. GLB250 2.0 DCT 4Matic is 224 hp, 6.9 s, 236 km/h, 1670 kg. Restyling GLB220 2.0 DCT 4Matic is 190 hp petrol AWD with mixed 8.5, 193 g/km, and 0–100 / top speed / weight not measured — do not pick it for a completed spec sheet.

Need the strongest Mercedes GLB 250 specs in this set: GLB250 2.0 DCT 4Matic, 224 hp / 165 kW (164 kW restyling), 350 Nm, 1991 cc, AWD, 8-speed Robotic, 6.9 s, 236 km/h. Horsepower searches for AMG GLB 35 are outside this catalogue: those versions are not in the data.

Need mpg first: on 1 generation the 5.0 mixed group is GLB180 1.3 DCT, GLB180d 2.0 DCT and FWD GLB200d 2.0 DCT. Lowest CO2 is GLB180d 2.0 DCT at 132 g/km. Restyling mixed floors at 6.1 on the two FWD diesels.

1 generation or restyling: power and 0–100 of shared names do not improve after 2023-03-01. Mixed litres and CO2 rise. Euro 6 is measured only on 1 generation. Restyling is the place for petrol GLB220 2.0 DCT 4Matic and for the duplicate-named GLB200d 2.0 DCT AWD row. Engine problems, oil spec, reliability and “is Mercedes GLB a good car” as a verdict are not measured here — the sheet is specs, not a fault log.

Short map: light petrol — GLB180 1.3 DCT / GLB200 1.3 DCT. Fastest — GLB250 2.0 DCT 4Matic. AWD diesel that earns the extra mass — GLB220d 2.0 DCT 4Matic. FWD diesel that is not the 11.3 s car — GLB200d 2.0 DCT. Do not pay the AWD 55 kg on GLB200d 2.0 DCT 4Matic unless you need AWD at 150 hp. Do not expect restyling to make any carry-over quicker.