Motorcoach Luxury Coach Favorite

MCI J4500 dimensions

MCI · Rear engine · Current platform · OEM verified

A 45-foot luxury touring coach designed around highway operation, large underfloor bays and heavy-duty coach systems. For conversion use, its raised floor and luggage volume are major advantages, while cost and systems complexity are substantial.

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Dimensions

Overall length45.6 ft
Buildable interior length34–37 ft
Buildable floor area250–285 sq ft
Standing volume1660–1900 cu ft
Interior width96 in
Interior height80 in
Exterior width102 in
Overall height140.75 in
Wheelbases315"
GVWRup to 54000 lb

Drivetrain & chassis

EngineCummins X12 410 hp in MCI D-Series specification
TransmissionAllison B500
Tires315/80R22.5 common current coach specification
BrakesHeavy-duty air disc system; exact current package by build
SuspensionElectronically controlled air suspension
FuelCoach configuration dependent
Axle ratioCoach final-drive ratio and transmission programming must be verified from build record

Cummins X12: Heavy-duty motorcoach engine. Coach-specific service access, 24-volt systems and emissions equipment differ sharply from school buses.

Configurations

315″ wheelbase 45.6 ft overall

Strengths and cautions

Works in its favour

  • Large raised passenger floor
  • Extensive underfloor storage
  • Highway-oriented suspension and brakes
  • Heavy-duty coach powertrain

Check before you buy

  • Coach systems and parts can be expensive
  • Low-clearance bays constrain tank and utility placement
  • 24-volt and multiplexed electrical systems require planning
  • 45-foot length may trigger licensing, parking and route limitations

Will a bed fit crosswise?

Interior width is about 96 inches before framing and panelling.

Twin crosswise (75″) Fits, about 21″ spare
Full / double crosswise (75″) Fits, about 21″ spare
Queen crosswise (80″) Fits, about 16″ spare
King crosswise (80″) Fits, about 16″ spare

Similar platforms

Figures here come from manufacturer documentation, but bodies were ordered to spec, so two vehicles of the same model year can still differ. Measure before you buy materials.
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