Most 2020s Transit Customs use Ford’s 2.0-litre EcoBlue diesel with a 6-speed manual and have DPF and AdBlue systems — common on Irish vans and important to maintain. The Custom comes in multiple wheelbase/roof combos (L1/L2/L3 and H1/H2) and temperature-controlled (insulated) bodies are often fitted as aftermarket or factory refrigerated units which add weight and extra servicing needs; commercial insurance and DOE history are handled separately from private cars.

• Clutch operation and pedal feel for heavy wear or slipping — manuals on busy vans are often on a replacement timetable by 100–150k km.
• DPF/AdBlue and EGR condition: look for excessive smoke, frequent regeneration events, or error lights that indicate short-trip/Dpf issues.
• Signs of overload: rear suspension sag, uneven tyre wear, or stretched/weak leaf springs which indicate chronic overloading.
• Cargo area and insulating body: check under any floor lining for rust, damage to the insulated panels, secure bulkhead/locking, and condition of side-door rollers and rear door seals.
• If marketed as temperature-controlled, verify the refrigeration unit compressor runs cleanly, evaporator condition, and that door seals/insulation keep temperature (service records for the fridge are important).