A research dossier for the Banshee Box mobile production van
Peugeot Boxer L4H3 is the ideal buy — same running gear as the Ducato at £11–18k less, VAT-reclaimable, and readily available used. Fiat Ducato L4H3 is the premium alternative — worth the extra spend only if the proven 9-speed automatic and factory warranty matter more than cash saved. Both are the identical Stellantis SEVEL van under different badges.
The Platform
The Fiat Ducato, Peugeot Boxer and Citroën Relay are built on the same line at the Stellantis SEVEL plant in Atessa, Italy. Same chassis, same body shell, same suspension, same front-wheel-drive layout, same 1,870 mm interior width. What differs is the badge, the dealer network, and — since 2024 — the engine.
The Head-to-Head
Reading L4H3 (extra-long wheelbase, full stand-up roof) on both badges. This is the size a 6'2" build needs — a fixed lengthwise bed and a full-height desk and kitchen without cutting the wheel-arch flares.
| Spec | Peugeot Boxer 435 L4H3 | Fiat Ducato 35 L4H3 |
|---|---|---|
| Engine | 2.2 BlueHDi, PSA DW12 (Trémery) | 2.2 MultiJet3, Fiat (Pratola Serra) |
| Outputs | 120 / 140 / 180 PS | 120 / 140 / 180 PS |
| Automatic | EAT8 8-speed — new mid-2024, rare used | ZF 9-speed — proven since ~2020, up to 450 Nm |
| Load length (L4) | 4,070 mm | 4,070 mm — identical body |
| Interior height (H3) | ~2.17 m | ~2.17 m — identical body |
| Interior width | 1,870 mm | 1,870 mm |
| Used market (Ireland) | Genuine L4H3 shells surface regularly, £13–25k+VAT | Scarce — most used stock is L3 or H2, not both |
| New price band | ~€35–38k+VAT (order) | £25,990–€36,000+VAT |
| Resale / camper market | Solid — shares the Ducato's parts pool | Strongest — ~2/3 of European motorhomes are Ducato-based |
| Converter / parts ecosystem (ROI) | Fits Ducato-spec brackets and pop-tops | Reference vehicle — aftermarket built around it first |
| VAT reclaim | Yes, on any +VAT unit | Yes, on any +VAT unit |
The Reasoning
The two vans are around 95% the same vehicle. The honest read: roughly 70% of the Ducato preference is feel and brand, 30% is real mechanical substance. That 30% is worth naming precisely.
~60% of AWD owners never needed it. The decision rule that held: fewer than 3 cancelled trips a year in 2WD in the last 3 years means skip it. All-terrain tyres and traction boards close ~90% of the real-world gap for a fraction of the cost and complexity.
The e-Boxer's usable range collapses to ~110–160 miles loaded, and staying under the 3.5t commercial weight limit forces the weakest battery variant. Off-grid living needs days away from a charger — the opposite of what an EV wants.
At 6'2", H2 loses 6–8 cm to floor and insulation build-up — not enough to stand comfortably. L3 is ample for a single; L4 adds the ~37 cm needed for a fixed bed plus a proper garage underneath it.
The Price Ladder
Live-verified prices, Northern Ireland and the Republic, June–July 2026. VAT-reclaimable prices are the real comparison for a VAT-registered buyer — the ex-VAT figure is what the business actually pays.
Live Market
This market moves in one to two weeks — genuine L4H3 shells at value prices sell fast. These are the units checked live, with sources.
Dooley Motors, Carlow — Fiat franchise dealer. ROI-registered, never imported, Greenlight-verified. Listed 580+ days — genuine room to negotiate.
● verified live Source: DoneDeal listingSandyford Motor Centre, Dublin. Greenlight-verified, never imported, 1-year warranty. Board leader on the badge-blind sweep — exact spec, no import admin, listed within days.
● verified live Source: DoneDeal ref 41999217, Sandyford Motor Centre (01-206-9200)Donnelly Van Centre, Mallusk. The genuine full-stand-up Ducato reliably orderable right now — L4H3 pre-reg units at this dealer sell within one to two weeks of listing.
● dealer, rotating stock Source: Donnelly Van Centre stock listFort Motors, Dublin 12. Effectively new, the exact unicorn spec, zero import admin. The premium ceiling of the search — everything else is a trade against this.
● verified live Source: DoneDeal ref 36572142, Fort Motors (01-456-1811)Pre-Purchase Discipline
Distilled from a wider inspection pass across builder and owner sources. The independent mechanic check is the highest-return spend in the entire process — €150–600 that catches everything below.
The Build
Sequenced by dependency, not preference — you can't fit a bed before the insulation is in, and you can't run an electric galley before the power system exists. The two phases that are genuinely constitutive — insulation and power — sit first. Everything after that degrades gracefully if delayed; those two don't.
Buy on condition, not price. Confirm the exact spec on the V5 — "L4H3" in a listing title is not reliable on its own.
Layout verified on paper: a 6ft bed fits wall-to-wall with insulation at both ends.
Constitutive. Damp, not cold, is what kills these builds — missed vapour control means rot behind the panels within two to three years. Breathable wool or Celotex over spray foam, always.
The van holds warmth overnight off-grid. The floor is solid underfoot.
Constitutive — the whole build runs electric, no gas. Priority order matters: battery, then DC-DC, then shore charging, then solar last. Irish winter solar can't carry the system alone.
The battery covers a full working day's draw from solar alone, in summer.
Filtered twice — once at the fill point, once at point of use. Runs off the power system built in Phase 2.
The tap and the external shower both run filtered. Waste dumps on command.
A dry-heat diesel heater actively dries the cabin, working with the insulation rather than against it. Gas-free by design — the CO alarm is non-negotiable regardless.
21°C held overnight on diesel. Cross-flow ventilation clears cooking smells in minutes.
Windows and lighting go in once the shell, power and heat are proven — no point finishing walls around a system that still needs opening back up.
Even daylight, no condensation bridging, full blackout achievable.
Fixed structure locks in the layout plan from Phase 0. Planned before the walls close, built once the walls exist.
Every zone has its fixed place — nothing shifts when driving.
This is where the van becomes livable day-to-day — sleep, cook, work, dine — and it only works because power, heat and cabinetry already exist.
A full meal cooked, fully electric, off the battery. Two people can dine and work at the table together.
Once every system exists, it needs one place to read and control it from.
All systems readable from a single panel. A full exterior view from inside.
The van's relationship to the outside world — worth doing once the inside is settled, not before.
The step retracts on ignition. Shower and fridge both usable from outside.
Roof work goes last because everything it feeds — solar, connectivity, the camera system — is already wired and ready to receive it.
Climate dialled in. First month's cost and power draw logged. Snag list cleared.
Schematics
Not decorative — these are the working diagrams the build follows.
Further Viewing