BYD Sealion 7 vs Mercedes-Benz GLB (EV)

Updated October 2026 · Real-world figures, not WLTP

BYD Sealion 7

SEALION 7 82.5 kWh RWD Comfort

£46,990 · 261 mi

Wins 5 of 20

Mercedes-Benz GLB (EV)

GLB 250+

£46,100 · 295 mi

Wins 15 of 20

Our verdict

The BYD Sealion 7 and Mercedes-Benz GLB (EV) are both electric SUVs in the large car class. The BYD Sealion 7 starts at £46,990 in the UK and the Mercedes-Benz GLB (EV) at £46,100, comparing the cheapest version of each.

The Sealion 7 is quicker, doing 0–62 mph in 6.7 s against 7.4 s. On top of that, it has the longer warranty (6 years against 3).

The GLB (EV) goes further, with about 295 miles of real-world range against 261 for the Sealion 7. On top of that, it charges faster on a rapid charger (208 kW against 115 kW on average, 10–80%), uses less energy (3.5 mi/kWh against 3.2 mi/kWh) and has the bigger boot (667 litres against 578).

There's little between them on price.

Choose the BYD Sealion 7 if you want more performance and a longer warranty and the Mercedes-Benz GLB (EV) if you want the longest range and quicker charging stops.

Written from the figures below, comparing the cheapest UK version of each. Other versions can differ: open them in Compare to swap versions.

BYD Sealion 7Mercedes-Benz GLB (EV)

Price

Price new: £46,990on sale now; £46,100 (best)on sale now
Used from (estimated): £22,300 (best)2024 car; £26,3002025 car
Price per mile of range: £180; £156 (best)

Range and efficiency

Real-world range: 261 mi420 km, estimate; 295 mi (best)475 km, estimate
Range today, used (estimated): about 250 mi2024 car, est.; about 290 mi (best)2025 car, est.
Efficiency: 3.2 mi/kWh196 Wh/km, estimate; 3.5 mi/kWh (best)179 Wh/km, estimate
Range with one 15-min stop: 273 mi440 km; 367 mi (best)590 km

Charging

Rapid charging: 115 kW10–80% average; 208 kW (best)10–80% average
Home (AC) charging: 11 kW; 22 kW (best)
Charging plug: Type 2 CCS; Type 2 CCS
Vehicle-to-load (V2L): Yes (best); No
Vehicle-to-home (V2H): No; Yes (best)
Vehicle-to-grid (V2G): No; Yes (best)

Battery

Usable battery: 82.5 kWh; 85 kWh (best)
Battery chemistry: LFP (lithium iron phosphate); NCM (nickel manganese cobalt)
Heat pump: Yes; Yes

Body and performance

Body style: SUV; SUV
Size class: D · Large car; D · Large car
Seats: 5; 7 (best)
Drive: Rear-wheel drive; Rear-wheel drive
0–62 mph: 6.7 s (best)0–100 km/h; 7.4 s0–100 km/h
Weight: 2,300 kg; 2,195 kg

Size

Length: 4.83 m15 ft 10 in; 4.73 m15 ft 6 in
Width (without mirrors): 1.93 m6 ft 4 in; 1.86 m6 ft 1 in
Width with mirrors: 2.19 m7 ft 2 in; 2.03 m6 ft 8 in
Height: 1.62 m5 ft 4 in; 1.69 m5 ft 6 in
Wheelbase: 2.93 m9 ft 7 in; 2.89 m9 ft 6 in

Practicality and safety

Boot space: 578 litres; 667 litres (best)
Towbar available: Yes; Yes
Towing (braked): 750 kg; 1,500 kg (best)
Max payload: 410 kgpeople and luggage; 580 kg (best)people and luggage
Euro NCAP rating: 5 stars; –not tested yet

Warranty (UK)

Car warranty: 6 years (best)93,750 miles; 3 years
Battery warranty: 8 years (best)125,000 miles; 8 years100,000 miles
Passes to next owner: Yes, with conditions; Not confirmed

Availability

Status: On sale new; On sale new
Model years: 2024 on; 2025 on

Green marks the better figure in each row. Range is a real-world estimate, not WLTP. Used prices are estimates. Warranty terms are UK terms from each maker’s website.