Imagine a diesel SUV that climbs mountains like a goat but pampers you like a five-star suite. That’s exactly what the new Mercedes-Benz G 350d and 400d bring to the table. These latest diesel-powered G-Wagens blend rugged off-road capability with luxury, tech, and everyday practicality — without losing their iconic charm. Whether you’re navigating city streets or crawling up Schöckl mountain trails, the G-Class now offers smoother torque delivery, refined cabin comfort, and a legacy that’s impossible to ignore. Let’s dive into what makes these two models the most versatile diesel giants on four wheels.
Overview Of The G-Class Legacy
Let’s take a step back. Before we dive into the G 350d and 400d, it helps to understand what the Mercedes-Benz G-Class really is. Originally developed for military use, the G-Wagen — or Mercedes-Benz G-Wagen — quickly earned a cult following. With its signature ladder frame, locking differentials, and iconic boxy shape, this Body on Frame SUV has gone from battlefield to boulevard without losing its rugged soul.
Hand-built in Graz, Austria, by Magna Steyr, the G-Class has passed through countless iterations. From the G 280 CDI Edition 30 PUR to the monstrous G 63 AMG V12 and even the quirky Puch G, each model reflects a different era. And yet, the core philosophy remains the same: indestructible off-road ability and stately luxury.
Engine And Performance
Let’s talk power. Under the hood of the G 350d and 400d sits the legendary OM 656 inline-6 engine. This diesel powerhouse offers a buttery-smooth experience with a torque curve that’s as flat as the Schöckl mountain trail it was tested on. The six-cylinder engine, paired with a 9-speed automatic and Torque Converter, delivers effortless acceleration while keeping revs low.
The G 350 Diesel is the more conservative sibling — refined, quiet, and economical. But step into the Mercedes-Benz G400d, and you’ll feel the boost. It’s not just a bump in numbers; it’s a different driving character entirely. It’s like sipping espresso vs downing a double shot.
Diesel Power: An Overview Of The G 350d And 400d Engines
Both G models rely on modern diesel efficiency. With Cylinder Deactivation and intelligent emissions control, they comply with stringent regulations while preserving real-world usability. This isn’t your grandfather’s diesel engine — it’s high-tech, responsive, and environmentally tuned.
Surprisingly, these diesel variants outperform older V8 engine setups like the G 500 in many daily scenarios. They even hold their own against petrol icons like the G 55 AMG and G 63 AMG, at least in the real world.
Off-Road Prowess And Capabilities
Let’s get dirty. These Gs are not just show ponies. With ample ground clearance, live rear axle, and traditional locking differentials, they thrive where Range Rovers might hesitate. Whether you’re on Indian National Highways or bush trails in the Australian G-Wagons, you’re in safe hands.
Off-road capability is enhanced by real-world geometry. The G’s ladder frame isn’t for aesthetics — it’s built for vertical climbs. And if you know anything about Schöckl, the G’s testing site in Austria, you’ll know that if it survives there, it’ll survive anywhere.
Advanced Drive Modes Explained
Modern-day G-Class models come equipped with Mercedes-Benz User Experience (MBUX) drive modes tailored to surfaces like sand, mud, and snow. These settings, combined with tech like the Torque Converter and diesel engine’s torque, make off-roading feel more like a game than a challenge.
And if you’re dreaming electric, yes — the Concept EQG and the upcoming electric G 580 with EQ Technology are in the pipeline. But until then, these diesels are the sweet spot between raw ability and refined tech.
Design Enhancements
Exterior Aesthetics: Balancing New And Classic
Some things shouldn’t change — like the G’s upright windshield and iconic radiator grille. But Mercedes didn’t stop there. The Night Black Magno finish is a crowd favorite, and optional AMG rims add a touch of aggression. It’s a blend of old-school cool and new-age refinement.
From auto show spotlights to real-world appreciation, this design turns heads everywhere — from The O2 Arena to a corner café in Berlin. It’s timeless.
Innovative Features: The Virtual Through-Look
One of the most mind-bending additions? The Virtual Through-Look — a feature using cameras and algorithms to “see through” the bonnet for better visibility on tricky terrain. It’s like x-ray vision for your G-Class.
Interior Luxury: Meeting High Expectations
Open the heavy door, and you’re met with Nappa leather, ARTICO upholstery, and an elegant instrument panel. Choose between Burmester® 3D Surround Sound System or the Harman Kardon Logic 7 for an audio experience that competes with concert halls.
From the classic charm of the COMAND APS to the intuitive MBUX system with Android Auto, the cabin is as tech-savvy as it is plush.
Technological Innovations
Seamless Navigation Systems
Integrated navigation isn’t just about maps anymore. The system guides you toward public charge points, off-road paths, or even hidden gems off the Detroit Motor Show route. It adapts in real-time, learning your driving habits.
Safety Technologies
Standard driver aids include lane-keep assist, adaptive cruise, and emergency braking. Whether you’re maneuvering a CKD kit in India or cruising through downtown Frankfurt, the G’s safety net always has your back.
The Luxury Experience
Craftsmanship And Materials
Every G-Class still involves a good bit of handwork. From the leather stitching to the click of a switch, it’s all about tactile pleasure. The craftsmanship rivals anything in the Mercedes-AMG CLE 53 lineup.
Comfort Features For Every Journey
Long drives? No problem. Ventilated massage seats, dual-zone climate control, and whisper-quiet cabins make each ride a pampered one. These are not mere SUVs — they’re rolling lounges.
Versatility In Motion
Adaptability For Various Terrains
City one day, mountain the next. These diesel Gs adapt seamlessly. Whether it’s a muddy path near the Volkswagen T2 Split Screen Camper meet-up or tackling sand dunes beside an Exige S1, these SUVs don’t flinch.
Lifestyle Integration
The G-Class is more than transport. It’s a lifestyle accessory, just as welcome at a luxury resort as it is in a snowy village. Weekend escape? Trophy haul? Grocery run? It fits all roles.
Economical Choices In Diesel
Performance Meets Economy
Forget the gas-guzzling stereotype. These diesels are frugal — especially the G 350 Diesel. They give you real-world mileage that even the Range Rover D350 envies.
Add in low-end torque, effortless cruising, and minimal maintenance, and you’ve got a package that balances brawn with brains.
Comparing The Competition
Mercedes-Benz G 350d And 400d Vs. Land Rover Defender
There’s no denying that the Land Rover Defender is a true off-road warrior. It’s tough, agile, and ready to conquer trails most SUVs wouldn’t dare touch. But when you step into a G-Class — whether it’s the 350d or the 400d — the difference is instant and deeply felt.
The Defender is built to perform; the G is built to impress while performing. From the military-inspired W461 chassis roots to the plush, hand-finished interior, the G-Class offers a prestige that’s hard to replicate. The Mercedes doesn’t just get you to your destination — it makes a statement while doing it.
Customization is another big win for the G. Mercedes lets you build a G-Wagon that reflects your personality — from wild G manufaktur palettes to special trims inspired by the Mercedes-Maybach G 650 Landaulet. The Defender? It’s capable, sure, but it doesn’t quite have that “special family” feel. And if you’re the kind who appreciates differential locks, on-demand all-wheel drive systems, and design touches signed off by Bruno Sacco, then it’s the G-Wagon that whispers (or growls) your name.
Mercedes-Benz G 350d And 400d Vs. Jeep Wrangler
The Jeep Wrangler is like that fun, rugged friend you’d take on a road trip — loud, lively, and unapologetically raw. It’s great at what it does and has earned its stripes crawling over boulders and splashing through muddy trails. But when it comes to everyday driveability, creature comforts, and engineering finesse, it just can’t hold a candle to the G-Class.
Think of it like this: The Wrangler is a G-Shock — durable, bold, reliable. The G-Class? That’s your Rolex. Still tough, but with elegance, precision, and timeless appeal.
Inside the Wrangler, you’ll find hard plastics and utilitarian layouts. Inside the G 350d or G 400d, you get luxury materials, advanced steering systems, ABS anti-lock braking, and that signature command seating position that feels more cockpit than cabin. Add in the subtle growl of a diesel V6, paired with silky shifts and fit power steering, and you start to understand why the G-Wagon isn’t just a car — it’s an icon.
Where the Jeep is fun, the G-Class is unforgettable.
Conclusion
The Mercedes-Benz G 350d and Mercedes-Benz G 400d aren’t just diesel-powered SUVs. They’re rolling statements of taste, power, and precision. From the slopes of Schöckl to the avenues of Beverly Hills, they embody timeless strength.
They merge military-grade engineering with five-star comfort, all while being surprisingly economical. In a world leaning electric — from the EQG 560 4MATIC to future EVs — these two diesels remain icons of internal combustion done right. The G-Class legacy marches on, and in the 350d and 400d, it marches with grace, grit, and grandeur.
Faqs
- What Is The Difference Between The G 350d And G 400d?
- The G 350d offers balanced performance and better economy, while the G 400d delivers more power and torque thanks to a higher-output version of the OM 656 inline-6 diesel engine.
- Are The G 350d And G 400d Good For Off-Road Driving?
- Absolutely. With features like locking differentials, live rear axle, and body-on-frame construction, both models excel in off-road conditions.
- What Makes The OM 656 Engine Special?
- The OM 656 is a modern six-cylinder diesel engine known for its efficiency, smoothness, and performance. It also includes emissions-friendly tech like Cylinder Deactivation.
- Is The G-Class Still Handmade?
- Yes, every G-Class is hand-assembled by Magna Steyr in Austria, ensuring quality craftsmanship and attention to detail.
- What Are The Luxury Features Inside The G 350d And 400d?
- From Nappa leather to the Burmester® 3D Surround Sound System, these G-Wagens feature top-tier materials and comfort options.
- Do The Diesel G-Class Models Support Android Auto?
- Yes, they support both Android Auto and Apple CarPlay via the updated MBUX system.
- Is Diesel Still A Good Option Today?
- For long-distance drivers and off-road use, diesel engines like those in the G 350d and G 400d offer strong torque and efficiency.
- How Do They Compare To Electric Options Like The Concept EQG?
- Electric G-Class models are coming, but diesel versions offer proven range, power, and off-road readiness with existing infrastructure.
- Can I Find A G 350d Or G 400d At Auto Shows?
- Definitely. They’re often displayed at global events like the Frankfurt Auto Show and the Detroit Motor Show.
- Are The G 350d And G 400d Expensive To Maintain?
- While premium, their proven diesel platform and Mercedes support network make them more affordable long-term than many V8 alternatives.