These two dominate the UK conversion market between them. The Ducato is the everyman's choice; the Sprinter is the premium pick. Which one is right depends less on badge loyalty and more on how you'll use the van and how comfortable you are with running costs.
Reliability over distance
Both will do 250,000+ miles with proper care. Sprinters tend to have a slight edge on long-haul reliability and engine longevity, particularly the OM651-family diesels. Ducatos have weak points around the front suspension turrets, the 2.3L cambelt interval (which Fiat themselves have revised), and electronic gearbox issues on the AMT models — all manageable if you know they're coming.
Parts and servicing costs
Ducato wins clearly. Service parts (filters, brakes, suspension components) are roughly 30–40% cheaper than Sprinter equivalents. Independent workshops are everywhere for Fiat; Mercedes specialists are fewer and dearer. Over a decade of ownership that gap is significant.
Driving experience
Sprinter feels more like a premium car — better steering, quieter cabin, smoother gearbox. Ducato is workmanlike, occasionally agricultural at speed, but easy to live with. For long touring days, Sprinter is the more relaxing seat.
Fuel economy
Real-world figures sit close — both 26–32mpg in coachbuilt motorhome trim, 30–38mpg in lighter campervan conversions. Sprinter's seven-speed auto edges ahead on motorways; Ducato's six-speed manual wins around town.
Resale
Sprinter-based conversions hold value slightly better. Ducato-based motorhomes are more numerous and sell faster simply because the buying pool is larger.
Common questions
Is the Ducato AMT (Comfort-Matic) gearbox reliable? Mixed reputation. Properly serviced and used gently it's fine for 150,000+ miles; abused or neglected it fails expensively. We'd buy a manual where available.
What's the cambelt interval on a Fiat Ducato 2.3L? Fiat has revised this several times — current guidance for many UK-supplied 2.3L Multijet engines is around 5 years or 72,000 miles, whichever first. Always check your VIN-specific schedule with a Fiat dealer or specialist.