Mercedes-Benz GLC 400 L 6-Seater Filed in China: 800V Twin-Motor EV on the MB.EA Platform

Mercedes-Benz has formally filed the GLC 400 L 6-seater with China’s MIIT, expanding the new electric GLC family beyond the 5-seat trim already in pre-sale at ¥349,000 (~$48,100). The 400 L sits on the all-new MB.EA pure-electric platform, runs an 800V architecture, and pairs front and rear permanent-magnet motors rated at 163 kW and 300 kW respectively. The flagship gets a 39.1-inch seamless MBUX Hyperscreen and Momenta-powered intelligent assisted driving — both China-tuned.

The 6-seat layout is the new headline. Mercedes is responding to a 2024–2026 surge in Chinese demand for premium mid-size SUVs with captain’s-chair second rows, where electric rivals like the Audi Q6L e-tron 6-seater, NIO ES6 special edition and IM LS8 have collectively grown 73% YoY. For broader context on how luxury EVs are positioned for chauffeured Chinese families, see electric MINI JCW Track Edition coverage.

GLC 400 L: Filing Details

Spec	Mercedes-Benz GLC 400 L (6-seater)
Length × Width × Height	4,949 (4,933) × 1,970 (1,914) × 1,710 (1,690) mm
Wheelbase	3,027 mm
Class	Mid-size SUV (China-only LWB)
Platform	MB.EA all-new pure-electric architecture
Voltage	800V
Front motor	163 kW (219 hp)
Rear motor	300 kW (402 hp)
Combined	463 kW (621 hp) — preliminary
Battery	Ternary lithium (capacity not yet disclosed)
Front trunk (frunk)	128 L
Grille	Heritage shield-style with 942 backlit elements, “breathing” animation
Wheels	20-inch or 21-inch options

MB.EA Platform: Mercedes’s Dedicated EV Architecture

MB.EA replaces Mercedes’s older EVA platform (used on EQE/EQS) and is the brand’s first pure-electric architecture co-developed for global and China markets simultaneously. Key technical points relevant to buyers:

• 800V high-voltage bus — Mercedes’s first 800V SUV. Enables up to ~280 kW DC peak charging at compatible stations.
• Permanent-magnet motors front and rear — improves efficiency over the asynchronous-front, PSM-rear layout in earlier EQ models.
• Heat pump standard, with an integrated thermal-management loop that shares heat across cabin, battery and powertrain.
• 800V silicon-carbide inverters deliver an estimated 6–8% efficiency advantage versus the 400V IGBTs in the outgoing EQE SUV.

6-Seat Layout Details

The 400 L’s 3,027 mm wheelbase — 70 mm longer than the global GLC EV — is the most extended Mercedes has applied to the GLC nameplate in any market. The 6-seat layout uses:

• Two front buckets
• Two captain’s chairs in the second row with a center walk-through aisle
• A two-passenger bench in the third row, accessible via electric-folding 2nd-row chairs

The optional 128 L frunk is the largest of any Mercedes EV to date, designed for charging cables and ski gear without compromising the rear cargo bay.

Chassis and ADAS: AIRMATIC + Rear-Wheel Steering + Momenta

• S-Class-derived AIRMATIC air suspension with adaptive damping
• Voice-controlled ride-height adjustment, with map-anticipated lowering for highway and raising for unpaved access roads
• ±4.5° rear-wheel steering
• Optional ADS+ damping for sportier handling
• Momenta intelligent assisted driving with city Navigate-on-Autopilot capability

The decision to use Momenta — a Chinese full-stack ADAS supplier — instead of Drive Pilot is significant. China-market EVs need NoA software trained on local road conditions, lane markings, and signage, and Momenta’s deep map and corner-case dataset is now standard for several joint-venture luxury launches.

Pricing and Competitive Landscape

Model	Wheelbase	Voltage	Top trim power	Price (¥)
Mercedes GLC 400 L	3,027 mm	800V	463 kW	est. 390,000–520,000
Audi Q6L e-tron 6-seat	3,005 mm	800V	340 kW	376,800–490,800
BMW iX3 (current gen)	2,864 mm	400V	210 kW	369,900–449,900
IM LS8 BEV	3,060 mm	800V	300 kW	est. 280,000–380,000
Onvo L90	3,110 mm	900V	340 kW	279,900–339,900

Why the GLC 400 L Matters for Mercedes-Benz China

Mercedes’s China EV share dropped to under 4% in Q1 2026 from a 2023 high near 9%, hit by EQ-Series price cuts and weak demand for the outgoing EQE SUV. The GLC 400 L is the first China-launch of the MB.EA generation and is expected to anchor the brand’s pure-EV mix at 12–14% of China sales by end-2027.

The 6-seat trim addresses a clear gap that Audi’s Q6L e-tron 6-seater filled aggressively in late 2025. For where Chinese premium-EV buyers are spending in 2026, see May 2026 China top 10 sales analysis.

FAQs

When will the Mercedes GLC 400 L 6-seater launch?

MIIT filings typically precede launch by 2–4 months. A late Q3 to early Q4 2026 launch is realistic.

What is the difference between MB.EA and the older EVA platform?

EVA was a 400V architecture shared across EQE and EQS. MB.EA is a fully redesigned 800V platform with new motors, inverters and a Chinese ADAS partner (Momenta).

Will the 5-seater GLC EV also get 800V?

Yes — both 5- and 6-seat versions share the same MB.EA platform and 800V architecture.

Does the GLC 400 L support battery swap?

No. Mercedes has not joined the NIO Power swap alliance and the MB.EA platform does not include swap-compatible mounting hardware.

Editor’s note: Specifications drawn from MIIT filings as of 2026-06-11. RMB-to-USD conversions use $1 ≈ ¥7.25.

Reviewed by Han Liu, Editor, iEVChina

Source: Autohome.com.cn