1993-1994 Mercedes-Benz G-class Long (W463) G 300 D (113 Hp) 4MATIC

The Mercedes-Benz G 300 D Long (W463) represents a specific iteration of the iconic G-Class, produced between September 1993 and August 1994. This variant, powered by a 3.0-liter diesel engine producing 113 horsepower, occupied a unique position within the W463 lineup, offering a balance between the G-Class’s legendary off-road capability and a more economical diesel powertrain. The “Long” designation refers to the extended wheelbase version of the W463, providing increased interior space and stability. It was primarily marketed in Europe and other regions where diesel engines were favored for their fuel efficiency and durability.

Technical Specifications

INTRODUCTION

The G 300 D Long, introduced in 1993, was a key model in the W463 series, which represented a significant evolution of the original G-Wagen. The W463, launched in 1979, had transitioned from a purely utilitarian military vehicle to a more refined, luxury-oriented SUV while retaining its exceptional off-road prowess. The addition of the “Long” wheelbase version in 1991 further broadened the G-Class’s appeal, offering increased passenger and cargo space. The G 300 D Long aimed to provide a more fuel-efficient and accessible entry point into the G-Class range, particularly in markets where diesel fuel was more prevalent and affordable.

Powertrain & Engine Architecture

At the heart of the G 300 D Long lies the OM 603.931, a 3.0-liter inline-six cylinder diesel engine. This engine is a naturally aspirated, precombustion chamber diesel, a design common in Mercedes-Benz diesels of the era. Precombustion chambers improve combustion efficiency, particularly at lower engine speeds, contributing to the engine’s characteristic torque delivery. The OM 603 featured a single overhead camshaft (SOHC) valvetrain operating two valves per cylinder. The engine produced 113 horsepower at 4600 rpm and 191 Nm (140.87 lb-ft) of torque between 2700 and 2900 rpm. The G 300 D Long was exclusively offered with a 5-speed manual transmission, designed to handle the engine’s torque and provide a robust driving experience. This transmission was chosen for its durability and suitability for off-road conditions.

Driving Characteristics

The G 300 D Long, with its 113 horsepower and manual transmission, offered a distinctly different driving experience compared to the more powerful G-Class variants like the G 360 AMG or later models with gasoline engines. Acceleration was modest, prioritizing torque for low-speed off-road crawling and towing. The 5-speed manual transmission required more driver involvement than the automatic transmissions found in some other G-Class models. The gear ratios were optimized for off-road use, providing ample low-end torque for navigating challenging terrain. On paved roads, the G 300 D Long felt somewhat agricultural, with noticeable engine noise and a firm ride due to its rugged suspension. However, its robust construction and all-wheel-drive system provided a sense of security and stability.

Equipment & Trim Levels

The G 300 D Long, while offering a degree of luxury compared to earlier G-Wagens, was relatively sparsely equipped compared to modern SUVs. Standard features typically included cloth upholstery, basic instrumentation, and manual windows and door locks. Optional extras could include power windows, central locking, a sunroof, and upgraded audio systems. The interior design was functional and durable, reflecting the G-Class’s origins as a utilitarian vehicle. The extended wheelbase provided more rear passenger legroom than the standard-wheelbase G-Class, enhancing comfort for occupants.

Chassis & Braking

The G 300 D Long retained the traditional G-Class chassis construction, featuring a ladder frame and rigid axles. This robust design provided exceptional off-road capability and durability. The front suspension utilized coil springs and a rigid axle with trailing arms, while the rear suspension employed a similar configuration. Braking duties were handled by disc brakes at the front and drum brakes at the rear. An Anti-lock Braking System (ABS) was standard, enhancing braking performance and stability, particularly on slippery surfaces. The steering system was a cone worm with recirculation balls, providing a direct but somewhat heavy steering feel.

Market Reception & Comparison

The G 300 D Long was generally well-received in markets where diesel engines were popular. Critics praised its off-road capability, durability, and fuel efficiency. However, some reviewers noted its modest performance and relatively basic interior compared to other luxury SUVs. Compared to the gasoline-powered G-Class variants, the G 300 D Long offered a more affordable entry point into the G-Class range, but at the expense of outright speed and refinement. Compared to other diesel SUVs of the era, the G 300 D Long stood out for its exceptional off-road prowess and unique styling.

Legacy

The G 300 D Long, while a relatively short-lived model, remains a sought-after vehicle among G-Class enthusiasts. The OM 603 diesel engine is known for its reliability and longevity, and well-maintained examples can still provide years of service. The G 300 D Long’s combination of ruggedness, practicality, and iconic styling has ensured its enduring appeal in the used car market. Today, these vehicles are often seen as collectible items, representing a unique chapter in the G-Class’s history. The W463 generation, including the G 300 D Long, laid the foundation for the modern G-Class, which continues to be a symbol of luxury and off-road capability.