Mercedes‑Benz G 400 D AMG: Specs, Review & Performance
The Mercedes‑Benz G 400 D AMG isn’t just a luxury off‑roader; it’s a modern reinterpretation of an icon that balances brute torque with refined cabin comforts. In this review we’ll break down the engine output, interior tech, and how the vehicle behaves both on a city street and a rocky trail. If you’ve ever wondered whether the newest G‑class can still surprise seasoned enthusiasts, keep reading – the numbers and real‑world impressions speak for themselves.
What Sets the G 400 D AMG Apart?
At first glance the G 400 D AMG retains the boxy silhouette that has defined the G‑class for decades, yet subtle AMG cues – matte black grille, distinctive alloy wheels, and a sport‑tuned exhaust – signal a more aggressive intent. Under the hood sits a 3.0‑litre inline‑six diesel, a rarity in a segment dominated by gasoline V8s. This powerplant, paired with a nine‑speed automatic, delivers a torque curve that feels more like a low‑end surge than a high‑rev roar.
Engine, Transmission, and Raw Power
The heart of the G 400 D AMG is Mercedes’ M256 3.0 L turbo‑charged diesel. It produces 286 hp and a hefty 600 Nm (about 443 lb‑ft) of torque, available from just 1,500 rpm. The torque‑rich character makes low‑speed climbs feel effortless, while the nine‑speed 9G‑TRONIC automatic shifts smoothly enough for highway cruising.
- 0–100 km/h (0‑62 mph): roughly 7.7 seconds
- Top speed: limited to 210 km/h (130 mph)
- Fuel consumption (combined): about 8.5 L/100 km (≈27 mpg)
- CO₂ emissions: 224 g/km
Those figures may not break speed records, but the real thrill lies in the immediate pull you feel when you feather the throttle on a steep incline.
Interior Comfort and Technology
Step inside, and the contrast between rugged exterior and plush interior becomes evident. The cabin features leather‑wrapped seats with contrasting stitching, a 12.3‑inch digital instrument cluster, and the latest MBUX infotainment system that supports voice commands, navigation, and over‑the‑air updates. Ambient lighting is customizable in 64 hues, allowing owners to set a tone that matches their mood – whether it’s a desert sunrise or a nighttime city drive.
Practicality isn’t ignored either. The rear bench folds flat, creating a cargo space of up to 1,600 L, while the front seats offer ample thigh room for taller drivers. Sound insulation has been improved, muting much of the diesel clatter that older models were notorious for.
Off‑Road Prowess Remains Undiminished
Mercedes‑Benz didn’t sacrifice the G‑class’s legendary off‑road DNA for the AMG badge. The G 400 D retains three‑lock differentials, a low‑range gearbox, and a high ground clearance of 219 mm. The optional “Off‑Road Package” adds a two‑speed transfer case and reinforced underbody plates, enabling rock‑crawling at angles that would challenge many purpose‑built SUVs.
On a typical 30‑degree incline, the diesel’s abundant low‑end torque keeps the wheels spinning just enough to maintain traction without overwhelming the drivetrain. Plus, the integrated Terrain Response system automatically adjusts throttle response, suspension damping, and traction control based on the selected mode – from “Sand” to “Rock Crawl”.
On‑Road Dynamics: Comfort Meets Capability
On pavement, the G 400 D AMG surprises with a composed ride. The air‑sprung suspension softens bumps, while the AMG‑tuned chassis reduces body roll during cornering. Because the diesel engine sits further forward, weight distribution is slightly more balanced than in gasoline‑only variants, contributing to a steadier feel at highway speeds.
Braking is confident, thanks to ventilated discs up front and solid rear drums that have been upgraded with an electronic brake‑force distribution system. The vehicle feels substantial but not sluggish, making daily commuting less of a novelty and more of a comfortable routine.
Pricing, Value, and Competition
Base pricing for the G 400 D AMG starts around €108,000 (approximately $115,000), positioning it between the standard G 350 d and the high‑performance G 63 AMG. Considering the blend of diesel efficiency, luxury appointments, and off‑road capability, the G 400 D AMG offers a compelling value proposition for buyers who want both eco‑friendliness and ruggedness.
Competitors such as the Land Rover Defender 110 Diesel and the Toyota Land Cruiser V8 deliver comparable off‑road credentials but often lack the premium interior finish and brand cachet of Mercedes‑Benz. The G 400 D AMG thus occupies a niche where performance, prestige, and practicality intersect.
Frequently Asked Questions
How fast can the G 400 D AMG accelerate?
It reaches 0–100 km/h in about 7.7 seconds, which is quick for a diesel‑powered SUV of its size.
What is the real‑world fuel economy?
Drivers typically report combined consumption between 8 and 9 L/100 km, translating to roughly 25–30 mpg depending on driving style and terrain.
Can the G 400 D AMG tow heavy loads?
Yes, it’s rated to tow up to 3,500 kg (7,716 lb), making it suitable for boat trailers or caravan use while still handling off‑road duties.
