Mercedes-Benz G 400 d

Core summary

European G 400 d, September 2020 production update. Source-based specification and buying analysis.

The G 400 d is worth comparing as a particular diesel G-Class, not as a universal answer to off-road and luxury needs. Begin with the routes and access constraints that make you want this body in the first place.

History & generations

For the September 2020 production update, Mercedes made the previously restricted G 400 d freely configurable after the limited special model ended.

Body, platform & design

The update broadened personalization choices, including Night Package availability without requiring the AMG Line or stainless-steel package.

Engine & drivetrain

The inline-six diesel is rated at 243 kW (330 PS) and 700 Nm, with peak torque available from 1,200 to 3,200 rpm.

Trim differences

Separate a paint or trim premium from mechanical condition when comparing used examples. A rare color may be desirable to you, but it does not replace evidence of maintenance.

Interior & seating

A widescreen cockpit became standard with this production update. Earlier cars should not automatically be assigned the same equipment.

Efficiency & range

Estimate diesel costs from journeys comparable to your own. Do not justify the purchase with an isolated low-consumption trip while ignoring how often the vehicle will be used for short errands.

Safety & equipment

The update made the parking package with a reversing camera standard and introduced a Desert drive program for sandy surfaces.

Strengths

Our interpretation favors a buyer who consciously wants this combination of diesel propulsion and G-Class packaging. It is less persuasive as a purchase made simply because diesel is assumed to make any large vehicle economical.

Considerations

Ask a specialist to inspect the individual vehicle’s underside and service history. Evidence of modifications or hard use deserves investigation even when the bodywork and interior have been carefully cleaned.

Recommended use

For remote journeys, prepare recovery and maintenance arrangements as part of ownership planning. For town use, rehearse access and turning maneuvers before allowing the adventure image to drive the decision.

Rivals & related

A G 500 comparison should include fuel, condition and equipment on separate lines. Comparing two asking prices without those details can conceal the real difference between the vehicles.

FAQ

Can every G 400 d listing be assumed to have the update? No. Establish production date and original equipment first; registration date and an advertisement title alone do not resolve that question.

Sources & updates

Reference scope: European G 400 d, September 2020 production update. Research-based guide; no hands-on road test is claimed. Manufacturer specifications are distinguished from Cariary buying interpretation. Text reviewed 14 October 2026. Sources for the revised text:

https://media.mercedes-benz.com/article/3cb38b87-31c8-48a2-b2ce-bb962e438205

• Manufacturer reference — European G 400 d, September 2020 production update →Source used for the stated historical model-year specification; not a claim of a current range.
• Photo 1 — Tokumeigakarinoaoshima / Wikimedia Commons / CC BY-SA 4.0 →Resized and encoded as WEBP; original composition retained. Mercedes-Benz G 400 d, front view. Japanese-market display vehicle photographed in November 2021; equipment may differ from the European specification discussed here.
• Photo 2 — Tokumeigakarinoaoshima / Wikimedia Commons / CC BY-SA 4.0 →Resized and encoded as WEBP; original composition retained. Mercedes-Benz G 400 d, rear view. Japanese-market display vehicle photographed in November 2021; equipment may differ from the European specification discussed here.

Last editorial review: October 14, 2026. Specifications remain market- and model-year-specific.