The Mercedes-Benz 123 series is an icon of reliability and engineering, hugely popular in New Zealand. From 1976 to 1979, these cars were known for their robust construction and longevity. However, age takes its toll, making diligent inspection and maintenance crucial for NZ owners.
Common issues include rust (especially around wheel arches, sills, and floors), worn suspension components (subframe mounts, control arm bushes), diesel injector and pump problems (diesel models), and electrical faults due to brittle wiring and corroded connections. Vacuum system leaks (affecting central locking and climate control) are also frequent.
WOF tips
Rust is a key WOF failure point, particularly around structural areas. Suspension components (shocks, springs, bushes) must be in good condition. Check brake lines and hoses for corrosion and leaks. Headlights and taillights should be fully functional. Steering systems need to be free from excessive play. Functionality of seatbelts are mandatory.
About the Mercedes-Benz 123 240 D
The W123 series was renowned for its durable engines, both petrol and diesel. However, diesel models, while long-lasting, can suffer from injector issues and pump wear with age. Suspension components, particularly the rear subframe mounts, are prone to deterioration. Rust is a major concern, especially in coastal regions. Electrical systems, while robust for their time, can develop faults due to age and corroded connections.
Questions owners ask
What are the common rust spots I should check on a Mercedes-Benz 123 in New Zealand?
Given New Zealand's climate, especially in coastal areas, rust is a significant concern for the Mercedes-Benz 123 (1976-1979). Pay close attention to the wheel arches, sills, and floors. These areas are particularly susceptible to corrosion and should be inspected regularly.
What are the key things checked during a WOF inspection for a Mercedes-Benz 123?
During a WOF inspection for your Mercedes-Benz 123, rust in structural areas is a major failure point. The inspector will also check the condition of suspension components like shocks, springs, and bushes. Brake lines and hoses will be inspected for corrosion and leaks. Headlights, taillights, and seatbelts must be fully functional, and the steering system should be free from excessive play.
My Mercedes-Benz 123 diesel is running rough. What could be the problem?
If your Mercedes-Benz 123 diesel engine is running rough, common culprits include worn diesel injectors and fuel pump issues. These components are known to degrade over time, especially in older models. It's recommended to have these components inspected by a mechanic familiar with classic Mercedes-Benz vehicles.
Where can I get replacement suspension parts for my Mercedes-Benz 123 1976–1979 in NZ?
CARFIX stocks 139 SKUs for the Mercedes-Benz 123 1976–1979. You can find replacement suspension parts such as shocks and struts front at CARFIX. Check the CARFIX website or visit a store to see the full range of available parts.
What are some common electrical problems to watch out for on a Mercedes-Benz 123?
Due to the age of the Mercedes-Benz 123 (1976-1979), electrical faults can occur due to brittle wiring and corroded connections. Keep an eye out for issues with lights, central locking, and other electrical systems. Vacuum system leaks can also affect central locking and climate control.
How often should I service my Mercedes-Benz 123?
The recommended service interval for the Mercedes-Benz 123 is every 10000km. Regular servicing is crucial to maintaining its reliability, especially given its age.
What should I be aware of regarding the suspension on my Mercedes-Benz 123?
The suspension components on the Mercedes-Benz 123, particularly the rear subframe mounts and control arm bushes, are prone to deterioration. Listen for clunking noises and have the suspension inspected regularly, especially if you notice any changes in handling.