2004 Mitsubishi Diamante
Recalls, most-reported problems, crash-test ratings, fuel economy and what a 2004 Mitsubishi Diamante is worth — from official NHTSA and EPA data. 6 on record.
2004 Mitsubishi Diamante at a glance
Included: that car's specs and build sheet, model-year recall campaigns and a fair price.
2004 Mitsubishi Diamante recalls 1
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…
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.
2004 Mitsubishi Diamante common problems
The most-reported problem areas across all 3 owner complaints filed with NHTSA — and what to check before you buy.
2004 Mitsubishi Diamante MPG & running costs
Source: U.S. EPA / DOE fueleconomy.gov. The EPA lists 2 versions of this model year; combined is shown as a range and the other figures are averages.
What's a 2004 Mitsubishi Diamante worth?
Estimated 5-year cost to own
A rough guide to what running a 2004 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.
Dimensions & weight
Manufacturer-reported figures for the 2004 Mitsubishi Diamante. Source: Transport Canada vehicle specifications via NHTSA.
Investigations & service bulletins
Manufacturer service bulletins 29
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 29.
This is a Dealer Letter sent to dealers informing that Mitsubishi Technical Training has launched the 3rd quarterly technician quiz for 2023.
Bulletin DEALER LETTER · Equipment · Jul 2023This Technical Service Bulletin provides instructions and material safety data sheets for removal of rap-film adhesive residue.
Bulletin TSB-23-00-004 · Structure · Apr 2023This Technical Service Bulletin reviews the regulations that require a label showing the reduction in load carrying capacity be affixed to vehicles when the total net weight of accessories is more than 1.5 percent of the vehicle's gross vehicle weight rating (…
Bulletin TSB-23-00-001 · Equipment · Apr 2023This is a Dealer Letter sent to dealers informing that Mitsubishi Technical Training has launched the 2nd quarterly technician quiz for 2023.
Bulletin DEALER LETTER · Equipment · Apr 2023This 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 message sent to dealers, to inform them that an update for MEDIC will be available.
Bulletin MEDICUpdate517 · Equipment · Feb 2018This 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 2015Source: 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.
