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Mercedes-Benz G-Class 250 GD (1990–1993)

The Mercedes-Benz G-Class 250 GD, produced between 1990 and 1993, exemplifies an extraordinary blend of rugged off-road capability and luxury. Known as the Geländewagen, this legendary vehicle commands respect with its robust design and relentless performance, making it a coveted choice for adventurers and urban dwellers alike. While the G-Class is built to withstand the toughest conditions, it requires regular maintenance to keep it performing at its best and to combat the inevitable challenges of age and exposure.

Parts for the Mercedes-Benz G-Class 250 GD

Known issues

Rust is a significant concern, particularly in areas exposed to saltwater and mud. The chassis, body panels (especially around the door hinges and window seals), and underbody components are vulnerable. Differential lockers can malfunction if not properly maintained. Suspension components, including springs and shock absorbers, wear out due to the vehicle's weight and off-road use. Electrical issues, particularly with the complex wiring system, can also occur.

WOF tips

WOF inspectors will pay close attention to the chassis for rust and damage. Suspension components, including ball joints, bushings, and shock absorbers, must be in good condition. Brakes are critical, given the vehicle's weight and intended use. Lights and signals must function correctly. The condition of the tyres is also important, especially if the vehicle is equipped with specialist off-road tyres.

About the Mercedes-Benz G-Class 250 GD

The G-Class 250 GD boasts a ladder-frame chassis and durable body panels, yet rust remains a concern, especially in exposed areas. Regular checks for corrosion, particularly around door hinges and window seals, are vital to maintaining its integrity. Additionally, the cooling system often needs attention around the 150,000 km mark. Parts such as the water pump, thermostat, and radiator hoses should be inspected to ensure optimal function. Neglecting these can lead to significant issues down the line. [This naturally links to /shop/cooling]

Suspension components also experience wear from the vehicle's weight and off-road prowess; ensuring the longevity of these parts requires regular inspection. Brake systems are crucial for safety, with front and rear brake services recommended every 30,000 km to maintain performance. Don't forget to check for signs of wear on your differential lockers—proper maintenance is key to preventing malfunctions. Explore our extensive range of services to keep your G-Class performing like new. [Partner with us for /shop/braking and /shop/suspension!] As an owner, staying ahead of these common issues ensures that your G-Class remains the dependable companion it was designed to be.

Questions owners ask

What are the common rust spots I should inspect on my 1990-1993 Mercedes-Benz G-Class?
Given New Zealand's climate, rust is a significant concern for the G-Class. Focus on the chassis, body panels (especially around door hinges and window seals), and underbody components. Regular checks are crucial to prevent extensive damage.
How often should I service the brakes on my Mercedes-Benz G-Class 250 GD?
To maintain optimal braking performance on your G-Class, front and rear brake services are recommended every 30,000 km. Regular inspections will help identify wear and ensure your safety, especially given the vehicle's weight.
What will a WOF inspector check on my 1990-1993 Mercedes-Benz G-Class?
During a Warrant of Fitness inspection, the inspector will pay close attention to the chassis for rust and damage. They'll also check suspension components like ball joints, bushings, and shock absorbers. Brakes are critical, and lights/signals must function correctly. Tyre condition is also assessed, particularly if you have specialist off-road tyres.
My G-Class differential lockers aren't working properly. What could be the issue?
Malfunctioning differential lockers in your G-Class are often due to a lack of proper maintenance. Regular servicing and inspection are key to preventing issues. Neglecting this can lead to significant problems, especially if you frequently use the vehicle off-road.
Where can I get replacement shock absorbers for my 1990-1993 Mercedes-Benz G-Class in NZ?
CARFIX stocks 35 SKUs for your G-Class, including a range of suspension components. Check our online store or visit a local CARFIX partner to find the correct shock absorbers for your vehicle.
How often should I change the oil in my 1990-1993 Mercedes-Benz G-Class?
The recommended service interval for your G-Class is 10,000 km. This includes an oil and filter change to keep the engine running smoothly.
At what mileage should I inspect the cooling system on my G-Class 250 GD?
It's a good idea to inspect the cooling system on your G-Class around the 150,000 km mark. Pay close attention to the water pump, thermostat, and radiator hoses, as these are common failure points. Addressing these issues early can prevent more significant problems.