The electric GLC is designed as a family SUV, not merely a technology showcase. Its 570-litre rear boot is joined by a genuinely useful 128-litre front compartment. Here is what the figures mean and what to check alongside our 2026 GLC EQ review.
GLC EQ boot space and practicality
| Area | Capacity / layout |
|---|---|
| Rear boot, seats up | 570 litres |
| Rear boot, seats folded | 1,740 litres |
| Front compartment | 128 litres; 100 litres under the ISO measurement cited at launch |
| Rear backrest | 40:20:40 split, electrically folding |
| Wheelbase | 2,972 mm |
The separate frunk is especially valuable because wet or dirty charging cables no longer have to sit on top of luggage. It can also hold smaller bags that would otherwise roll around the rear load area. The 40:20:40 backrest allows long items through the centre while preserving two rear seats.
Passenger space
Mercedes says the electric GLC's wheelbase is 80 mm longer than the combustion GLC. The company quotes 13 mm more front legroom, 47 mm more rear legroom, 46 mm more front headroom and 17 mm more rear headroom. Those gains sound modest in isolation but can decide whether a rear-facing child seat, tall passenger or panoramic-roof option works for your family.
Five things the litre figure cannot tell you
- Width between the wheel arches and the smallest tailgate opening.
- Height beneath the parcel shelf, which matters for dogs and stacked cases.
- Whether the folded floor is flat enough for long boxes.
- How much underfloor space remains after carrying cables and repair equipment.
- Whether your pushchair fits lengthways without removing its wheels.
GLC EQ versus BMW iX3 cargo capacity
BMW lists 520–1,750 litres plus a 58-litre front compartment for the iX3 50 xDrive. Mercedes lists 570–1,740 litres plus 128 litres in front. The BMW has ten litres more with the seats folded; the GLC has 50 litres more behind the rear seat and 70 litres more under the bonnet. Shape still matters more than a small total-volume difference. See our GLC EQ vs BMW iX3 comparison.
Practical test before ordering
- Take your largest pushchair, suitcase or dog crate to the retailer.
- Set the driver's seat to your position before testing rear legroom.
- Fold each section of the rear seat and check the load-floor step.
- Open the frunk and practise storing the cable without touching painted panels.
- If you tow, calculate payload with passengers and nose weight included.
Options that can affect daily use
Large wheels can reduce ride comfort and certified range. The panoramic roof can change headroom and cabin heat load. Rear-axle steering improves manoeuvrability but should be evaluated alongside cost and wheel choice. Buy the configuration that solves your daily constraints rather than the one that looks strongest in a launch photograph.
Families planning caravan holidays should combine this page with the GLC EQ towing-capacity guide; long-distance buyers should also read the range and efficiency guide.
Mercedes GLC EQ FAQ
How big is the GLC EQ boot?
Mercedes lists 570 litres with the seats up and 1,740 litres with them folded.
Does the electric GLC have a frunk?
Yes, a large 128-litre front compartment is listed.
Do the rear seats split?
Yes, the backrest uses a practical 40:20:40 split.
Is its boot larger than the BMW iX3's?
With the seats up, Mercedes lists 570 litres versus BMW's 520. With seats folded, BMW lists 1,750 versus 1,740 litres.
Will a large dog crate fit?
The volume is promising, but measure the crate and the narrowest opening; litres do not describe shape.
Continue your GLC EQ research
Sources and methodology
Specifications and dates were checked against manufacturer material. Range and charging results in daily use vary with temperature, speed, wheels, traffic, payload and charger conditions.
- Mercedes-Benz current dimensions and luggage data (official manufacturer source)
- Mercedes-Benz launch packaging data (official manufacturer source)
- BMW Group iX3 luggage data (official manufacturer source)
