The worst 2026 Mci J4500 problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
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Recalls 1
Equipment: other: labels
- What is wrong
- Motor Coach Industries (MCI) is recalling certain 2025 D4520, D45CRTLE, D45CRT, J3500, and 2025-2026 J4500 buses. The emergency exit label may be placed in the incorrect location. As such, these vehicles fail to conform to Federal Motor Vehicle Safety Standard (FMVSS) number 217, "Bus Emergency Exits and Window Retention and Release."
- Risk
- Incorrectly located labels may prevent or delay the use of the emergency exit, increasing the risk of injury.
- Remedy
- MCI will install or mail labels as necessary, free of charge. Owner notification letters were mailed August 6, 2025. Owners may contact MCI customer service at 1‑800‑241‑2947.
Recall number 25V457000 · Recall details
Technical service bulletins for the 2026 Mci J4500 18
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- Instructions to update the PLC program to add a brake light telltale on dash when brakes are activated
- Instructions for uploading the latest program to add theme lights
- Instructions to clean and treat rusted surface on specific tubes showing rust on bottom of the center chassis.
- Instructions to verify compression fitting P/N 19-10-1335 is installed correctly.
- This bulletin is to provide instructions for clearing DTC 1067 FMI 7 (Pressure Sensor Not Calibrated) and...
- Instructions for uploading the latest software to include RGB light features.
- Instructions for adding an oil collection bottle on the HVAC compressor to measure oil seepage past the seal.
- This bulletin introduces an optional product improvement to the A/C compressor drive system for coaches...
- This TSIB provides information to provide a software update
- Instructions to realign windshield support plate to prevent vertical windshield cracks.
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Questions about the 2026 Mci J4500
Is the 2026 Mci J4500 reliable?
Owners have filed 0 complaints about the 2026 Mci J4500.
What is the most common problem with the 2026 Mci J4500?
There are not enough complaints to tell.
How many recalls does the 2026 Mci J4500 have?
1 recall, covering equipment.
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