The Mercedes-Benz Vito W639, also known as the Viano for its passenger variants, represents the second generation of Mercedes' mid-size commercial van and people carrier. Launched in 2003, it aimed to build on the success of its predecessor (W638) with improved comfort, safety, and a wider range of engines. The W639 was produced until 2014, undergoing two significant facelifts: a minor update in 2007 and a more substantial one in 2010, which introduced new Euro 5 compliant engines (OM651) and revised styling. Positioned as a premium offering in its segment, the Vito/Viano was praised for its driving dynamics, interior quality (especially in Viano trim), and load-carrying capabilities. However, its reliability record is mixed, with common issues ranging from rust to specific engine and elec
The Mercedes-Benz Vito W639 is a vehicle with significant potential, offering a premium experience and strong capabilities for a van. However, its reliability is a mixed bag, heavily dependent on maintenance history, specific engine choice, and the year of manufacture. Early models (pre-2010 facelift) are more prone to rust and some OM646 engine issues. The 2010 facelift brought the OM651 engines, which offered better efficiency but had their own initial injector problems. The V6 diesel (OM642) and petrol (M272) engines offer excellent performance but come with higher potential repair costs for specific known issues. Verdict: NEGOTIATE for most W639s. A well-maintained, post-2010 facelift model (especially with documented OM651 injector replacements) can be a good buy. Earlier models require a very thorough inspection for rust and engine health. The V6 petrol M272 should be AVOIDED if it's a pre-2007 model without proof of balance shaft repair. If you find a meticulously maintained example with a full service history and no significant rust, it can be a rewarding purchase, but be prepared for potentially higher running costs than some rivals. Always factor in a pre-purchase inspect