RAM ProMaster
2014-present
Interior dimensions
Planning reference for a 159" wheelbase high-roof configuration; verify the exact model year and body before building.
| Cargo length | 4038 mm |
| Cargo width | 1920 mm |
| Cargo height | 1905 mm |
| Usable width | 1540 mm |
| Door width | 1524 mm |
| Door height | 1755 mm |
Measure your own vehicle before designing: lining, bulkhead, wheel arches and equipment can reduce usable space.
Reference specification
| Wheelbases | 136" WB (3455mm) · 159" WB (4040mm) · 159" EXT WB (4585mm) |
| Reference kerb weight | 2509 kg |
| Fuel | Gasoline |
| Reference engines | 3.6L Pentastar V6 280hp |
| Indicative economy | 13-17 mpg (highway) |
Recommended layouts
Wide Body Classic
Fixed transverse bed (fits east-west!) + L-shaped kitchen + wet bath
Couples who want a full-width bed without going lengthwise
Open Concept
Murphy bed + large living area + full kitchen counter + portable toilet closet
Those who prioritize daytime living space and entertaining
Mobile Workshop
Rear workspace/studio + fold-down bed + compact galley + storage walls
Artists, craftspeople, or mobile business owners
Estimated budget
Basic
$6,000
Basic insulation, bed frame, 12V system, portable kitchen
Standard
$20,000
Custom build: cabinets, solar, water, heater, fridge
Premium
$45,000
Professional: full bathroom, lithium, AC, premium finishes, smart systems
Indicative ranges for comparing build scope; they may not include the vehicle, approval, labour or contingencies. Obtain current quotes before purchasing.
Pros & Cons
Pros
- ✓Widest cargo van available — 1920mm allows a full east-west bed for most people
- ✓Front-wheel drive means flat, low cargo floor with no driveshaft hump
- ✓Often competitively priced among full-size vans in the US
- ✓Reference payload leaves useful scope for a conversion when axle limits are respected
- ✓Front-wheel-drive layout can simplify a lower cargo floor
Cons
- –Only gasoline engine available in the US — no diesel option for fuel economy
- –FWD means limited off-road capability compared to RWD/AWD competitors
- –Lower ground clearance makes rough roads and boondocking more challenging
- –Pentastar V6 fuel economy is poor (13-17 mpg) for long road trips
- –Boxy styling and tall height make crosswind driving more noticeable