Mercedes has unveiled the second-generation GLB, a seven-seat SUV that sits alongside the CLA and shares its new MMA platform. This architecture supports both electric and hybrid powertrains, and the GLB is currently the largest model to use it, with the next-gen GLA arriving below it next year.
The new GLB enters a niche space as the only premium SUV in its segment to offer both EV and ICE options with seven seats. Indirect alternatives include the Tesla Model Y, Audi Q4 E-tron and Volkswagen ID 4, while true seven-seat electric rivals are either cheaper (Peugeot e-5008) or far more expensive (Volvo EX90, Kia EV9).
Sales begin in early 2026, with the GLB expected to cost about £2000 more than the CLA Shooting Brake. That puts the ICE version at around £41,000 and the EV just under £50,000.
Design
The new GLB keeps its boxy, upright SUV profile, echoing the G-Class. EV and ICE versions look similar, but the petrol model features a traditional grille with a chrome star pattern, while the EV gets an illuminated panel with 94 light-up stars that animate as you approach or leave the car. A full-width rear light bar and a star-patterned sunroof add to the visual drama.
The wheelbase has grown by 60mm, improving cabin space and giving the car a more planted stance, helped by rugged body cladding and an exposed undertray.
Interior
With a wheelbase of 2.9m, the GLB offers noticeably more room in the second and third rows. Mercedes says the rearmost seats can comfortably fit passengers up to 5ft 6in, helped by bigger door openings and more adjustability in the middle row. Head room is also up across all three rows.
Inside, the standout option is the full-width Superscreen, taken from the S-Class. It merges a 10.25in driver display, 14in central touchscreen and 14in passenger screen into one panel. It runs the latest MBUX system, which now uses advanced graphics tech and includes AI features from Microsoft and Google.
The updated “Hey Mercedes” assistant uses ChatGPT and Google Gemini for more natural conversation and detailed navigation help. Despite the tech focus, Mercedes has brought back a physical volume roller and a dedicated adaptive cruise control switch after customer feedback.
Powertrains
The EV range launches first. Two versions will be available: the 250 with 260bhp and rear-wheel drive, or the dual-motor 350 4Matic with 349bhp. An 85kWh (usable) battery delivers up to 392 miles of range, putting it near the top of its class. Charging speeds of up to 320kW allow for a claimed 162 miles of range added in 10 minutes.
The EV uses an 800V architecture as standard; using the UK’s more common 400V chargers requires an £850 DC converter. V2L capability will be added later via an over-the-air update.
A cheaper GLB 200 EV will follow, offering 221bhp and a smaller 58kWh battery for roughly 280 miles of range, with full details to come.
ICE power arrives later next year via a 1.5-litre mild-hybrid petrol engine, offered with 134bhp or 161bhp (FWD) or 188bhp (AWD). The 1.3kWh battery and 27bhp integrated motor allow short bursts of engine-off driving at low speeds. Fuel economy is expected to match the CLA hybrid at around mid-50s mpg.
