The honest answer
Both platforms are budget-friendlier alternatives to the Sprinter, and both are real build platforms — not compromises. The Transit is our default recommendation for most customers comparing these two. The factory AWD option, the largest dealer network in the country, and the taller stock ceiling cover more use cases than the ProMaster's strengths.
The ProMaster wins on three specific things: lowest sticker price, widest interior, and the Super High Roof. If any of those drive your decision — especially if you want to sleep east-west without modifications or need 7'2" of standing room — the ProMaster is the right call.
1. Price: ProMaster's main edge
Both are noticeably cheaper than a Sprinter, but the ProMaster is the cheapest of the three. The gap between Transit and ProMaster is smaller than the gap between either and the Sprinter, but it's still real money.
| Van | New (2025–2026) | Typical Used Range |
|---|---|---|
| RAM ProMaster 2500 HR 159" WB | ~$52,955 | $18K–$30K |
| Ford Transit T-250 HR 148" WB | ~$54,900 | $25K–$40K |
| Ford Transit T-250 HR 148" Extended | ~$56,095 | $30K–$45K |
On the new market, the ProMaster runs about $2,000 less than a comparable Transit High Roof — a smaller gap than people expect. Where the savings really show up is on the used market: ProMasters depreciate faster than Transits, so a used ProMaster is often $7K–$15K cheaper than a comparable Transit at the same age and mileage.
Resale runs the other way: Transits hold their value better than ProMasters. If you plan to sell the build down the road, the Transit recovers more of your investment. Factory AWD Transits hold value especially well in the used market.
2. Interior width and east-west sleeping
The ProMaster is meaningfully wider inside — 75.6" max, versus the Transit's 70". That 5.6" doesn't sound like much until you try to sleep east-west across the van.
A standard queen mattress is 60" wide. A 6-footer sleeping east-west needs ~72". The ProMaster gets you there with room to spare. The Transit is 2 inches short of 6 feet at its widest shoulder point — but there's a workaround.
The Transit "sleep bump-out" trick
There's a factory gap in the Transit's side-wall ribbing where the OEM windows mount. If you build your sleep-area wall panel tight to the van's outer skin in just that section, you pick up 2–4 extra inches — enough for a 6-footer to stretch out. No flares, no extra cost. The ProMaster gets you there without any builder tricks.
| Measurement | Transit HR | ProMaster HR | ProMaster Super HR |
|---|---|---|---|
| Interior height | 81.5" (6'9.5") | 76" (6'4") | 86" (7'2") |
| Interior width (max) | 70" | 75.6" | 75.6" |
| Floor width (between wheel wells) | ~55" | ~55.8" | ~55.8" |
| Load floor height | ~28" | ~21" | ~21" |
| Cargo length (standard body) | 172" (148" Ext) | ~146" (159" WB) | ~146" (159" WB) |
| Cargo length (extended body) | 172" (148" Ext) | ~160" | ~160" |
Note that the floor width between wheel wells is essentially the same on both vans (~55–55.8"). The ProMaster's width advantage is at shoulder height, which is where it matters for an east-west bed — but cabinetry runs and lower-storage layouts have similar usable width on either platform.
On length, the Transit Extended at 172" wins by about a foot over the ProMaster Extended (~160") and over two feet over the standard ProMaster body (146"). If you're planning a long layout with permanent bed, kitchen, and bathroom in a row, the Transit Extended gives you the most room to work with.
3. The Super High Roof option
The ProMaster offers a Super High Roof that adds 10 inches of interior height — bringing it to 86" (7'2"). That's the tallest stock interior of any conversion van you can buy new in North America today.
The Transit High Roof tops out at 81.5" (6'9.5") — already taller than a Sprinter HR — but the ProMaster Super HR is in its own category. If you're tall, or you want truly generous standing room after insulation and flooring, this is a real differentiator. The Transit doesn't have an equivalent.
4. AWD: Transit's biggest edge
This is where the Transit pulls ahead for most customers. Ford has offered factory Intelligent AWD on the Transit since the 2020 model year — always-on, no low-range, and integrated cleanly enough that it doesn't raise the load floor or seat height. AWD adds roughly $3,900 to the sticker depending on configuration. If you want a true 4x4, Quigley has historically offered an SVE-qualified conversion for pre-2020 Transits at around $12K–$14K (the 2020+ NextGen4x4 conversion has been pending release).
The ProMaster is FWD only. There is no factory AWD or 4x4 option from RAM, and the aftermarket is much thinner — a few specialty shops like OZK Customs have done ProMaster 4x4 conversions, but it's a complex retrofit from FWD that isn't practical for most buyers. For all intents and purposes, plan on the ProMaster being front-wheel drive.
For snowy mountain roads, dispersed forest camping, sandy washes, or any travel where occasional traction matters, the Transit wins this category cleanly. If you stick to paved roads and maintained campgrounds, the ProMaster's FWD handles fine — front-wheel drive with weight loaded over the drive axle is actually quite capable in light snow and rain.
5. Engines and service network
Both vans run gas engines — no diesel emissions systems to manage on either, which is a real plus for everyday drivability and lower maintenance complexity.
The ProMaster runs the 3.6L Pentastar V6 — the same engine used in Jeep Wranglers, Dodge Chargers, and dozens of other vehicles. Parts are everywhere, and any independent shop can work on it.
The Transit offers two gas V6s: a 3.5L PFDi (275 hp / 260 lb-ft) and a 3.5L EcoBoost (310 hp / 400 lb-ft). The EcoBoost is more powerful and is the right choice if you'll be towing or fully loaded most of the time. Both are well-supported.
Ford has the largest dealer network in the country
If you're traveling full-time or remote, this is a real safety net. RAM's network is wide too, but smaller. When something goes wrong in a small town, you're more likely to find a Ford dealer than a RAM one.
Real-world fuel economy is similar between the two. Empty: ProMaster 14–18 MPG, Transit 16–17 MPG. After a full conversion adds 1,500–3,000 lbs, both drop to roughly 12–16 MPG depending on driving conditions and weight.
6. Build considerations
From a builder's perspective, both platforms have real strengths and quirks. We've done full builds on each — see Haven for our Ford Transit 148 Extended build and Daybreak for our RAM ProMaster High Roof Extended build.
The ProMaster's load floor sits about 21" off the ground — versus 28" on a Transit. That makes daily entry and exit easier, which matters more than people expect on a van you live with. The wider interior also means more usable layout options, especially for kitchen runs that span the width of the van.
The Transit's wall geometry is more curved than a ProMaster's — there's more trimming and contour-cutting around the wheel wells and corners during insulation. The payoff is the factory sleep bump-out we covered earlier. The ProMaster's walls are flatter and more uniform, which speeds up cabinetry install slightly.
Aftermarket support favors the Transit. Companies like Aluminess, Owl Van, and Quigley make Transit-specific products. The ProMaster aftermarket is growing but still smaller. Neither matches the Sprinter's ecosystem, but the Transit has the deeper bench between these two.
Side-by-side summary
| Factor | Transit | ProMaster |
|---|---|---|
| Starting price (new) | ~$48K–$55K | ~$45K ✓ |
| Interior height (HR) | 81.5" ✓ | 76" / 86" Super HR |
| Interior width | 70" | 75.6" ✓ |
| Max cargo length | 172" (148 Ext) ✓ | ~146" (159 WB) |
| AWD available? | Yes (factory, 2020+) ✓ | No |
| Engine | 3.5L V6 PFDi or EcoBoost | 3.6L Pentastar V6 |
| Fuel economy (empty) | 16–17 MPG | 14–18 MPG |
| Resale value | Stronger ✓ | Faster depreciation |
| Dealer network | Largest in US ✓ | Wide but smaller |
| Aftermarket support | Deeper ✓ | Growing |
| Load floor height | ~28" | ~21" ✓ |
Who should choose which
Choose Transit if:
- • You want factory AWD for snow, dirt roads, or remote travel
- • Service-network access matters — you travel often or live remote
- • You need the Extended length for a long permanent layout (172" cargo)
- • Resale value is part of your decision
- • You want the deeper aftermarket ecosystem for racks, bumpers, and accessories
Choose ProMaster if:
- • Lowest sticker price is your priority
- • You want east-west sleep without builder tricks or flares
- • You want the Super High Roof (86" / 7'2") — nothing else offers this stock
- • Easy daily entry matters (21" load floor)
- • You don't need AWD for your travel patterns
The bottom line
For most customers comparing these two, the Transit is the right call. AWD availability, the largest dealer network in the country, longer wheelbase options, and stronger resale add up to a more versatile platform.
The ProMaster wins decisively on three things: lowest price, widest interior, and the Super High Roof. If any of those drive your decision, it's a real platform with real advantages — we build great conversions on ProMasters. But for a default recommendation between the two, we point most customers at the Transit.
Frequently asked questions
Is the Transit or ProMaster better for a van conversion?
Both are excellent platforms with different strengths. The Transit is our default recommendation thanks to factory AWD availability, the largest dealer network in the country, the longer Extended body (172" of cargo length), and stronger resale value. The ProMaster wins on three specific things: lowest sticker price (about $2K less than a comparable Transit HR), the widest interior at 75.6", and the only Super High Roof option at 86" (7'2") of standing room.
Which is cheaper, a Transit or ProMaster?
The ProMaster is cheaper across the board. A new RAM ProMaster 2500 HR 159" WB starts around $52,955 versus about $54,900 for a comparable Ford Transit T-250 HR 148" WB — roughly a $2,000 difference on new pricing. On the used market, ProMasters depreciate faster, so a used ProMaster typically runs $7K–$15K cheaper than a Transit at the same age and mileage. See our van conversion cost guide for the full picture.
Does the RAM ProMaster come in AWD?
No. The ProMaster is front-wheel drive only. There is no factory AWD or 4x4 option from RAM, and aftermarket conversions are extremely rare. The Ford Transit has offered factory Intelligent AWD since the 2020 model year for roughly $3,900 over the RWD price. If AWD matters for your travel patterns, the Transit is the clear choice.
Which van has a taller interior, Transit or ProMaster?
It depends on which ProMaster roof you spec. The standard ProMaster High Roof has 76" of interior height (6'4"), shorter than the Transit High Roof at 81.5" (6'9.5"). However, the ProMaster also offers a Super High Roof option with 86" (7'2") of interior height — the tallest stock interior of any conversion van you can buy new today.
Which has better resale value, Transit or ProMaster?
The Transit holds its value significantly better than the ProMaster. ProMasters depreciate faster due to a smaller buyer pool and the FWD limitation that keeps them out of off-road and winter-use markets. Transit AWD models hold value especially well. If you plan to sell the build down the road, the Transit recovers more of your original investment.
More comparisons & guides
All Comparisons
Compare van platforms and conversion options.
Best Van for Van Life
Which platform fits your specific situation?
Transit Conversions
Our Transit build process and pricing.
ProMaster Conversions
Our ProMaster build process and pricing.
Haven (Transit Build)
Our Ford Transit 148 Extended build — full kitchen, off-grid electrical, weekend-ready layout.
Daybreak (ProMaster Build)
Our RAM ProMaster High Roof Extended build — full kitchen, off-grid systems, road-trip layout.
Our Build Process
From consultation to handoff — how we work.
Van Conversion Cost
Real numbers across tiers, broken down by system.