Engine & cooling

Mci J4500 Engine problems by year

1 complaints filed with NHTSA about the Mci J4500's engine & cooling. Stalling, loss of power, oil consumption, overheating, head gaskets, timing chains and engine failure.

Engine complaints by model year

'01 '02 '03 '04 '05 '06 '07 '08 '09 '10 '11 1'12 '13 '14 '15 '16 '17 '18 '19 '20 '21 '25 '26

Year	Engine complaints	Recalls
2020	0	1
2019	0	1
2018	0	1
2017	0	1
2012	1	0
2011	0	1
2006	0	1
2005	0	1
2004	0	1
2003	0	1
2002	0	1
2001	0	1

Engine recalls

Engine and engine cooling: hoses / lines / piping / fittings

20V526000Aug 31, 20201,561 vehicles affected

Motor Coach Industries (MCI) is recalling certain 2017-2020 J4500 motor coaches. The coolant hose may fail, resulting in a low coolant warning followed by an engine shut down sequence, as well as the potential for engine coolant spilling on the roadway.

Covers2017 Mci J4500 2018 Mci J4500 2019 Mci J4500 2020 Mci J4500

Engine and engine cooling

11V457000Aug 31, 201110 vehicles affected

Motor coach industries, inc. (Mci) is recalling certain model year 2011 e4500 and j4500 motor coaches manufactured from december 2010 through january 2011, equipped with a cummins isx 11.9 Diesel engine. The v-band clamp assembly, part numbers q187684...

Covers2011 Mci J4500 +1 more

Engine and engine cooling: diesel

06V140000Apr 27, 20064,765 vehicles affected

On certain motor coaches equipped with detroit diesel series 60 engines, the turbocharger compressors can fail.

Covers2001 Mci J4500 2002 Mci J4500 2003 Mci J4500 2004 Mci J4500 2005 Mci J4500 2006 Mci J4500 +65 more

Latest J4500 engine complaints

2012 Mci J4500 Engine & cooling

This problem exists on at least 4 out of 10, mci motor-coaches manufactured from 2006 to 2013. The problem has not been reported nor investigated because it remains un-detected during routine maintenance, computer diagnostics or by any company mechanics. The issue only becomes apparent after several hours of continuous driving a (minimum of 400 miles ) mci passenger motor-coach. No facility or mechanic will drive the vehicle for the extended amount of time to detect the problem. There is also no...

Read the full complaint

equipment/monitor available to monitor or evaluate the air quality in the driver cabin area. The driver area begins to smell of antifreeze vapors/toxic fumes that have escaped into the driver cockpit. There is no obvious leaks of any coolant/antifreeze in the driver area and the driver ac/heater core appears to have no leaks yet the toxic fumes/vapors are seeping into the driver cabin. The drivers are forced to cope with continuous exposure of the dangerous fumes/vapors that not only affect the entire environment and air quality but the health of the driver and possibly the general public/passengers. *Tr

Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked daily. Complaints are owners' own reports and are not verified. How we use the data