I often hear "we got a 7-seat electric for the family, but actually the kids can't sit in the third row on the motorway — it's too hot and there's no ventilation." Or worse: "the uncle who's 1.85 m can't sit at the back without hitting his head."
A 7-seat EV on paper isn't always a 7-seater in real life. Some have a third row that's really just a children's bench, others have a genuine adult-sized third row. The difference completely changes what you can actually do with the car.
Here's the ranking based on real dimensions, not marketing.
What matters: the measurements that determine comfort
Straight answer: to assess whether a 7-seat EV is truly spacious for passengers, three measurements matter more than anything:
| Measurement | Adult comfort threshold | Children threshold |
|---|---|---|
| Knee room (row 3) | > 650 mm | > 450 mm |
| Headroom (row 3) | > 800 mm | > 700 mm |
| Step-in height | < 500 mm | < 600 mm |
Knee room measures the distance between the back of the row-2 seat and the front edge of the row-3 cushion. Headroom measures the height from the cushion to the roof. These two measurements determine whether a normal adult can spend 2 hours there without suffering.
Ranking by actual third-row passenger space
1. Volkswagen ID. Buzz L — the best for regular adult use
The long-wheelbase ID. Buzz (3.24 m wheelbase, on sale in Belgium since 2024) is the most practical 7-seat EV for regular third-row use by adults.
Why: the MPV profile gives the greatest interior height in the segment — 1.58 m under the roof. The second row slides forward to create legroom in the third row. Access is through a wide central aisle — no acrobatics needed.
Third-row dimensions:
- Headroom: ~880 mm (segment record)
- Knee room: ~660 mm (comfortable for 1.80 m)
- Step-in height: ~510 mm — slightly high but not a problem
Boot (7 passengers): ~340 L — decent. With the third row folded: 1,121 L — absolute segment record.
Range: 77 kWh, ~380–420 km real-world. Sufficient for most family trips. The version with the 86 kWh battery (announced for late 2026) will improve this.
Price in Belgium: €68,000–78,000 depending on trim.
2. Kia EV9 — the most versatile: space + range + fast charging
The EV9 is the most successful compromise between real space, range and charging technology. It's the one I'd recommend to families who regularly do long trips.
Third-row dimensions:
- Headroom: ~820 mm (comfortable for 1.78 m)
- Knee room: ~670 mm (better than the Model X)
- Access: sliding second row, wide side opening
What sets it apart:
- 800V architecture — 240 kW DC max (Ionity, some Superchargers with CCS adapter)
- 99.8 kWh net — 600 km WLTP, ~480–520 km real-world in mixed use
- 3 independent climate zones (including third row)
- USB-C ports in rows 2 and 3
Boot (7 passengers): 333 L + under-floor space. With 5 passengers: 828 L.
Price in Belgium: €74,000–82,000 depending on drivetrain (RWD or AWD) and trim.
3. Tesla Model X Long Range — the most luxurious, but the tightest third row
The Model X with its falcon-wing doors is spectacular. The third row is the best-finished (leather, passenger screen, adjustable leg rest). But it's also the least spacious in actual headroom.
Third-row dimensions:
- Headroom: ~760 mm (borderline for 1.75 m)
- Knee room: ~610 mm (tight for 1.80 m)
- Access: falcon-wing doors — excellent access even in a tight car park (they open upward)
What sets it apart:
- Unmatched interior finish in the segment
- Falcon-wing doors: practical in car parks (less lateral space needed)
- Range: ~110 kWh, ~530–570 km real-world
- Supercharger up to 250 kW
Boot (7 passengers): 198 L. With 5 passengers: 744 L.
Verdict: excellent for families with children (8–14 years) in the third row who want prestige and range. Less suited for regular adult use in the third row on long trips.
Price in Belgium: €105,000–120,000.
4. Mercedes EQB — the most affordable, the smallest third row
The EQB is the cheapest 7-seat EV in the segment. But it has a third row sized for children under 12–13, not for adults.
Third-row dimensions:
- Headroom: ~740 mm (short adult possible, 1.70 m max)
- Knee room: ~580 mm (very tight for an adult)
- Access: low sill but narrow aisle
Range: 70.5 kWh, ~380–420 km real-world. Max 100 kW DC charging — not fast.
When to choose it: limited budget, children in the third row, no regular adults at the back.
Price in Belgium: €62,000–68,000.
Comparative summary table
| Model | 3rd-row headroom | 3rd-row knee room | Boot at 7 | Real-world range | Belgium price |
|---|---|---|---|---|---|
| VW ID. Buzz L | ~880 mm | ~660 mm | 340 L | 380–420 km | €68–78k |
| Kia EV9 | ~820 mm | ~670 mm | 333 L | 480–520 km | €74–82k |
| Tesla Model X LR | ~760 mm | ~610 mm | 198 L | 530–570 km | €105–120k |
| Mercedes EQB | ~740 mm | ~580 mm | 315 L | 380–420 km | €62–68k |
My advice based on your usage
Children in the third row (under 12), controlled budget: EQB or ID. Buzz (standard 5/6-seat version)
Occasional adults in the third row, regular long trips: Kia EV9 — best compromise of space/range/charging
Large family, maximum third-row use, no long trips: VW ID. Buzz L — the only truly comfortable adult 7-seater with no compromise
Prestige, premium finish, children in the third row: Tesla Model X
To choose based on your family's profile (not just the number of seats), see our guide on 7 seats: how to choose based on your needs.