CARFIX

Mercedes-Benz 123 300 T D (1979–1985)

The Mercedes-Benz W123, produced from 1979 to 1985, is legendary for its durability and reliability. These cars earned a reputation for being practically indestructible, making them popular choices in New Zealand for years. They represent a time when Mercedes-Benz focused on engineering excellence over outright performance, resulting in a comfortable and dependable vehicle. Many are still going strong today, a testament to their robust design and build quality.

Parts for the Mercedes-Benz 123 300 T D

Known issues

Common problems with the W123 Mercedes-Benz include rust, worn suspension components (especially ball joints and bushings), and issues with the vacuum system (central locking, headlight adjustment). Diesel models can suffer from injector problems and fuel leaks. The automatic transmissions are durable but can require servicing over time.

WOF tips

During a WOF inspection in New Zealand, the W123 will be scrutinized for rust (especially around suspension mounting points, sills, and floor pan), brake condition (lines, hoses, and rotors), and the condition of the tires (tread depth, sidewall condition). Suspension components are another area to watch, as worn ball joints and bushings are common. Headlight alignment and functionality are also checked carefully.

About the Mercedes-Benz 123 300 T D

The W123 was available in various body styles, including sedan, coupe, and wagon (estate). In New Zealand, they were often used as taxis and family cars due to their spacious interiors and comfortable ride. Engine options ranged from fuel-efficient diesel engines to more powerful petrol units. Key areas to inspect on a W123 in NZ include rust (particularly in the sills, wheel arches, and around the windscreen), the condition of the suspension, and the functionality of the vacuum-operated systems (central locking, etc.). While parts are generally available, some specific components can be difficult to source. Regular maintenance is crucial to keep these classics running smoothly.

Questions owners ask

What are the most common rust spots to check on a Mercedes-Benz W123 in New Zealand?
When inspecting a Mercedes-Benz W123 (1979–1985) in New Zealand, pay close attention to rust in the sills, wheel arches, and around the windscreen. For WOF purposes, also check around suspension mounting points and the floor pan.
Where can I get replacement suspension components for my 1979–1985 Mercedes-Benz W123 in NZ?
CARFIX stocks 222 SKUs for the Mercedes-Benz W123 (1979–1985). You can find common suspension components like ball joints and bushings, which are known to wear on these models, through CARFIX.
What should I be aware of regarding the vacuum system on my Mercedes-Benz W123?
The Mercedes-Benz W123 (1979–1985) utilises vacuum-operated systems for features like central locking and headlight adjustment. Issues with these systems are common, so it's important to check their functionality.
What are the key WOF inspection points for a Mercedes-Benz W123 in New Zealand?
For a WOF inspection in New Zealand, your Mercedes-Benz W123 (1979–1985) will be thoroughly checked for rust (especially around suspension mounting points, sills, and floor pan), brake condition (lines, hoses, and rotors), and tire condition (tread depth, sidewall). Worn suspension components like ball joints and bushings, along with headlight alignment and functionality, are also critical inspection points.
How often should I service my Mercedes-Benz W123 (1979–1985)?
The recommended service interval for the Mercedes-Benz W123 (1979–1985) is every 10,000km. Regular maintenance is crucial to keep these classic cars running smoothly, especially given their age.
Are there specific engine issues to look out for on diesel Mercedes-Benz W123 models?
Yes, diesel engine variants of the Mercedes-Benz W123 (1979–1985) can commonly experience injector problems and fuel leaks. Regular inspection of the fuel system is advisable.