1999 Mitsubishi Diamante Fuel system Problems
- Complaints
- 1about this part
- Share
- 4%of 23 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the fuel system of the 1999 Mitsubishi Diamante, 4% of the 23 complaints for this model year.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Heater core issue with Mitsubishi Diamante 1999 summary: notice consistent and very noticiable foul odor when car is shutoff. Can smell inside the vehicle as well. Some fogging of front windshield. Have had this problem identified as consistent with heater core's issues by other Diamante owners who have had their car serviced at a Mitsubishi dealer. Have not replaced anything yet because the parts and labor quotes have been anywhere from $600-$1000. Car has 56,000 miles on it, but have noticed problem since buying the vehicle last year with 36,000 miles. …”
NHTSA complaint #10082280, filed 2004-07Related service bulletins
- 10170071Jul 22, 2015This is a service newsletter (Tech Talk) that was sent out to dealers.
- 10170100Feb 6, 2013This is a service newsletter (Tech Talk) that was sent out to dealers.
- 10170097Jan 15, 2013This is a service newsletter (Tech Talk) that was sent out to dealers.
- 10170087Dec 7, 2012This is a service newsletter (Tech Talk) that was sent out to dealers.
Fuel system: other model years
Other parts of the 1999 Mitsubishi Diamante
11 complaintsBrakes
3 complaintsEngine cooling
3 complaintsSuspension
3 complaintsSeat belts
1 complaintsSeats
1 complaintsSteering
1 complaintsBody and structure
1 complaintsTires
1 complaints
← All problems reported for the 1999 Mitsubishi Diamante
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology