1999 Mitsubishi Diamante
Recalls, most-reported problems, crash-test ratings, fuel economy and what a 1999 Mitsubishi Diamante is worth — from official NHTSA and EPA data. 1 on record.
1999 Mitsubishi Diamante at a glance
Included: that car's specs and build sheet, model-year recall campaigns and a fair price.
1999 Mitsubishi Diamante recalls 2
CERTAIN PASSENGER VEHICLES FAIL TO CONFORM TO THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 208, 'OCCUPANT CRASH PROTECTION.' THE BILINGUAL ENGLISH/SPANISH REMOVABLE AIR BAG WARNING LABELS AFFIXED TO THE DASH AND TO THE SUNVISOR DO NOT MEET THE SIZE REQUIREMENTS OF THE STANDARD.
Fix: MITSUBISHI CARIBBEAN WILL MAIL A CUSTOMER NOTIFICATION LETTER CONTAINING A WRITTEN DESCRIPTION AND A GRAPHIC OF THE BI-LINGUAL DASHBOARD AIR BAG WARNING LABEL. IN ADDITION, ALL CURRENT 2000-2004 NATIVA OWNERS WILL ALSO RECEIVE REPLACEMENT AIR BAG ALERT LABELS FOR THE SUN VISORS. THIS RECALL IS EXPE…
VEHICLE DESCRIPTION: PASSENGER VEHICLES. THE HEAD OF THE SCREW THAT HOLDS THE RETAINING CLIP FOR THE PARKING BRAKE SHOE CAN BECOME BRITTLE AND BREAK OFF.
Fix: DEALERS WILL REPLACE THE RETAINING CLIP SCREW AND IN THE PROCESS INSPECT THE REAR BRAKE SYSTEM OF ANY POSSIBLE RELATED DAMAGE. ANY RELATED DAMAGE THAT MAY BE FOUND WILL ALSO BE REPAIRED.
Source: U.S. NHTSA, checked 4 Nov 2026. A campaign covers the model year; to see whether a particular car still needs the repair, check its VIN on NHTSA.gov or ask a franchised dealer.
1999 Mitsubishi Diamante common problems
The most-reported problem areas across all 23 owner complaints filed with NHTSA — and what to check before you buy.
1999 Mitsubishi Diamante MPG & running costs
Source: U.S. EPA / DOE fueleconomy.gov.
Estimated 5-year cost to own
A rough guide to what running a 1999 Mitsubishi Diamante costs over five years and 75,000 miles.
How this is estimated: fuel is the U.S. EPA annual cost at 15,000 miles a year. There aren't enough comparable listings to estimate depreciation for this model, so it is left out. Not included: insurance, maintenance, repairs, taxes, registration and finance costs. Treat it as a comparison guide, not a quote.
Investigations & service bulletins
Manufacturer service bulletins 45
Technical notes the manufacturer sent to dealers about known issues and fixes. Useful to mention to a mechanic — they are not recalls and repairs may not be covered. Showing the 10 most recent of 45.
This Technical Service Bulletin was sent to dealers to explain the difference between normal dew condensation, which is a natural phenomenon, and water penetration caused by improper sealing or a defective/broken part.
Bulletin TSB-22-54-003 · Exterior Lighting · Apr 2022This is a service newsletter (Tech Talk) that was sent out to dealers.
Bulletin TT253 · Equipment · Nov 2019This is a Technical Service Bulletin sent to dealers. This bulletin supersedes TSB-18-00-003, issued April, 2018, to add updated information for Carrying Capacity Reduced Label.
Bulletin TSB-19-00-008 · Equipment · Jul 2019This is a service newsletter (Tech Talk) that was sent out to dealers.
Bulletin TT237 · Equipment · Feb 2018This is a service newsletter (Tech Talk) that was sent out to dealers.
Bulletin TT218 · Engine And Engine Cooling, Wheels, Power Train · Aug 2015This TSB contains troubleshooting steps for diagnosis of various customer complaints relating to the audio system speakers in Mitsubishi vehicles equipped with original equipment audio components.
Bulletin TSB-15-54-004 · Equipment · Jul 2015This is a service newsletter (Tech Talk) that was sent out to dealers.
Bulletin TT217 · Seats, Power Train, Fuel System, Gasoline · Jul 2015This is an index of Tech Talk newsletter articles released in 2012.
Bulletin TTIndex12 · Equipment · Mar 2013This is a service newsletter (Tech Talk) that was sent out to dealers.
Bulletin TT195 · Wheels, Steering, Power Train · Mar 2013This is a service newsletter (Tech Talk) that was sent out to dealers.
Bulletin TT194 · Power Train, Electrical System, Back Over Prevention · Feb 2013Source: NHTSA Office of Defects Investigation, listed for the DIAMANTE. Model-year data, not specific to one car.
About the Mitsubishi Diamante
The Mitsubishi Diamante is an automobile that was manufactured by Mitsubishi Motors from 1990 to 2005. The first series was a hardtop introduced to the public at the Tokyo Motor Show in 1989. It went on sale in Japan exclusively in May 1990 and won that year's Japan Car of the Year award. It was created by splicing an extra 6.6 cm (2.6 in) right down the middle of the Mitsubishi Galant, which itself had won the Japan Car of the Year award in 1987. The Diamante's platform was also used for the sporty Mitsubishi 3000GT.
From Wikipedia, licensed CC BY-SA 4.0. Describes the model line in general, not this model year specifically.