Fiat Ducato Campervan Conversion: The Widest Van in the Class

The Motorhome Industry's Favourite Van

Here's a fact that reframes the whole "which van" debate: the majority of coachbuilt motorhomes and factory van conversions sold in Europe are built on the Fiat Ducato. While UK self-builders and converters argue about VW versus Mercedes, the professional motorhome industry settled this question decades ago — and it chose the Ducato, in enormous volumes, year after year.

That's not sentiment. Motorhome manufacturers choose the Ducato because it's engineered for conversion: the widest body in its class, a low floor, a flat-sided load area that wastes little space, and a price that leaves more of the budget for the build. Everything that makes it the trade's favourite applies equally to your one-off conversion.

The Width Advantage

The Ducato's defining feature is width. The body is noticeably wider than a Sprinter or full-size Transit — around 1.87m between the walls at the widest point — and that single dimension changes the most important piece of furniture in the van: the bed.

In a Ducato, most people can sleep transversely — across the van rather than along it. A crossways double bed occupies around 60cm less of the van's length than a lengthways one, and that saved length becomes kitchen, bathroom or lounge. It's the main reason a medium Ducato can offer a layout that needs a longer van on other platforms. If you're around six feet tall or more, lie across one before committing — it's close, and window pods or tapered mattresses are common solutions at the margin.

The wide, square shell also means less wasted space generally: cabinetry sits flatter against the walls, and standard motorhome furniture and fittings are designed around Ducato dimensions, so the ecosystem of parts simply fits.

The Ducato as a Conversion Base

Sizes: the Ducato comes in multiple lengths and heights. The conversion sweet spots are the medium and long bodies with the H2 high roof, which gives genuine standing height from the factory. Load lengths run from around 2.7m in the shortest vans to over 4m in the longest — the popular long-wheelbase camper formats give roughly 3.7–4m to work with.

Platform family: the Ducato shares its design with the Peugeot Boxer and Citroën Relay (and more recent stablemates under the same group). For conversion purposes they're near-identical — layouts, furniture and most parts carry across — so widen your used search to all three badges and buy on condition and price.

Payload: generous, with heavier-duty "Maxi" variants available — one reason the platform suits big off-grid and full-time builds.

Typical layouts: the classic Ducato build is the proven motorhome formula — transverse fixed bed over a garage at the rear, wet room and kitchen amidships, half-dinette or swivel seats up front. It's the most space-efficient layout in van conversion, refined by the industry over decades.

What a Base Van Costs

Broad, honest UK used-market bands, remembering that Boxer and Relay equivalents often shave a little more off:

Like the Transit and Sprinter, most used Ducatos are ex-working vans, so history and condition trump age. The flip side of the value pricing is that there's simply more van for your money here than on any other large platform.

What the Conversion Costs

The Ducato sits in the large-van class of our cost guides: conversion-only, expect £16,000–£26,000 for a budget build, £28,000–£48,000 mid-range, and £45,000–£70,000+ for premium off-grid specifications, with the biggest Maxi-based full-time builds reaching the extra-large band. Because the base van is the cheapest of the large platforms, the Ducato usually delivers the most space per pound all-in of any van in this guide.

Built for Conversion: the Details That Help

Decades of supplying the motorhome trade have left the Ducato with practical advantages that only show up once you start planning a build:

None of this is glamorous, but it compounds: the Ducato is often the quickest large van to convert to a given spec, and that saved labour is real money.

Who a Ducato Conversion Suits

The Honest Drawbacks

Finding a Ducato Specialist

Converters who work on the Ducato tend to know the motorhome playbook inside out, which shows in their layouts. Use our converters directory to find workshops experienced with Ducato, Boxer and Relay bases, read verified reviews, and run our conversion cost calculator to budget your build. For the wider context on choosing a size class in the first place, our best van for a campervan conversion guide maps the whole landscape.