The first-generation Ford Focus (Mk1, codes DAW/DBW/DFW/DNW) marked a radical break upon its launch in 1998. Replacing the aging Escort, it introduced the 'New Edge' design and, above all, an unprecedented multi-link rear suspension in its category ('Control Blade'), redefining the C-segment's road handling standards. Voted Car of the Year in 1999, it received a facelift in late 2001 (headlights with integrated indicators, revised bumpers, improved sound insulation and equipment). Regarding diesel engines, it transitioned between the older generation of classic direct injection (TDDi) and modern common rail (TDCi). Today, it is a very affordable vehicle, but its reliability depends drastically on the choice of engine and maintenance history, especially for diesels.
Buying a Ford Focus Mk1 diesel today is a risky bet. The 1.8 TDCi offers excellent driving pleasure but its Delphi injection system is a financial time bomb (metal filings), often more expensive to repair than the car's value. The 1.8 TDDi is mechanically indestructible, but its Bosch injection pump remains a known weak point and it is very noisy. The verdict for diesels is therefore to AVOID the TDCi, and to NEGOTIATE a TDDi only if the pump has already been replaced. Ironically, the best Focus Mk1 is a petrol version (1.6 Zetec), which proves to be extremely reliable, inexpensive to maintain, and allows full enjoyment of the car's excellent chassis. In any case, the number one enemy remains rust: a thorough inspection of the underbody is mandatory.