2020 Mci D4520 Problems: 0 Complaints, 2 Recalls

The worst 2020 Mci D4520 problems

Ranked by number of owner complaints. Mileage and cost come from what owners wrote.

Tap a problem to see which part fails, at what mileage and in which other years.

Electrical system: instrument cluster/panelReported October 5, 2026 · 683 vehicles affected

What is wrong: Motor Coach Industries (MCI) is recalling certain 2018-2026 buses. Please see the complete list of models above. The instrument panel indicator light may not illuminate when the hazard warning lights are on and the master run switch is in the 'Off' position. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 108, "Lamps, Reflective Devices, and Associated Equipment."
Risk: Without the illuminated reminder, the driver may fail to turn off the exterior lights when no longer needed. Hazard warning lights that remain activated unintentionally can confuse other drivers, increasing the risk of a crash.
Remedy: MCI will update the software, free of charge. Owner notification letters are expected to be mailed November 24, 2026. Owners may contact MCI customer service at 1‑800‑241‑2947.

Recall number 26V645000 · Recall details

Electrical systemReported September 24, 2021 · 2,455 vehicles affected

What is wrong: Motor Coach Industries (MCI) is recalling certain 2018 D4000, 2018-2020 D4005, D4000ISTV, 2017-2020 D4500, D4505, 2018-2021 J3500, 2017-2021 J4500, 2020 D4520, and 2018-2021 D45CRTLE motorcoaches. The Main Distribution Panel (MDP) located within the battery compartment contains a circuit board that may fail.
Risk: MDP circuit board failure can result in a fire or an unexpected vehicle shutdown, increasing the risk of a crash.
Remedy: MCI Service Centers will remove the MDP and install a new main disconnect and circuit breaker panel, free of charge. Owner notification letters were mailed November 12, 2021. Owners may contact MCI's customer service at 1‑800‑241‑2947. MCI's number for this recall is R21-010.

Recall number 21V748000 · Recall details

Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.

Used buying checklistWhat to check on a 2020 Mci D4520 before you buy

Is the 2020 Mci D4520 reliable?

Owners have filed 0 complaints about the 2020 Mci D4520.

What is the most common problem with the 2020 Mci D4520?

There are not enough complaints to tell.

How many recalls does the 2020 Mci D4520 have?

2 recalls, covering electrical system.

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