Is the 1991 Mitsubishi Eclipse reliable?

It can be reliable if key maintenance is up to date, especially timing belt service and cooling system health. Most reliability complaints stem from neglected maintenance, aging electronics, and poorly modified turbo cars.

What are the most common 1991 Mitsubishi Eclipse common issues?

The most common issues include timing belt/balance shaft belt neglect, turbo wear or boost leaks on GS Turbo models, electrical/sensor failures causing drivability problems, and cooling system weaknesses that can lead to overheating.

Are maintenance costs high for a 1991 Eclipse?

Parts are generally affordable for a ’90s compact, but labor can add up if you’re catching up on deferred work. Turbo and AWD versions typically cost more to maintain, especially if previous modifications created extra problems.

What are the best years of the first-generation Eclipse to buy?

Many enthusiasts shop across 1990–1994 and prioritize condition and service records over a specific year. A stock or lightly modified car with documented timing belt service is usually a better buy than a newer-year example with unknown history.

What should I check before buying a 1991 Mitsubishi Eclipse?

Verify timing belt/water pump records, check for overheating signs, scan for oil leaks and blue smoke, inspect for boost/vacuum leaks on turbo models, and look closely at wiring quality and any modification work. A compression test and a thorough inspection are strongly recommended. Get a complete owner’s guide for the 1991 Mitsubishi Eclipse to see full specs, trim details, and the maintenance schedules that help prevent the most common problems.

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Reliability AnalysisBased on known issue patterns, repair cost data, and ownership trends · How we score

1991 Mitsubishi Eclipse Reliability ReportC- grade · moderate risk · system-by-system breakdown

62/ 100

KeepScore

MODERATE RISK

Grade: C-

An iconic '90s sports coupe offering exhilarating performance, but prepare for consistent maintenance and potential system overhauls due to age and design complexities.

Full system breakdown + what I would do

Quick Facts · 1991 Mitsubishi Eclipse

The system most likely to surface first: turbocharger & associated systems (4g63t) (major severity).
Has 4 NHTSA recalls on record — the most notable involves the exterior lighting.
Scores 6 points below the strongest nearby year — the 1990 Mitsubishi Eclipse earns a 68.

Is the 1991 Mitsubishi Eclipse Worth Buying?

The 1991 Mitsubishi Eclipse, particularly the enthusiast-favored turbo models, presents a high-octane ownership experience but demands vigilant maintenance and an owner prepared for specific age-related and design-inherent reliability challenges. While non-turbo variants are more forgiving, securing a well-preserved example with documented service history is paramount to avoid significant headaches.

Biggest Strengths

Robust base 4G63/4G64 engines (non-turbo)
Strong aftermarket support for parts
Engaging driving dynamics and performance potential

What Tends to Fail First on the 1991 Mitsubishi Eclipse

The systems that break first on the 1991 Mitsubishi Eclipse. Mileage windows, repair costs, and fix-before-you-buy notes are in the full report.

Turbocharger & Associated Systems (4G63T)major

Rust and Body Corrosioncritical

Electrical System Degradationmoderate

Typical mileage, cost ranges, and the exact what-to-check list are in the full report.

1991 Mitsubishi Eclipse Recall History

4 recalls on record from NHTSA. Check your VIN atnhtsa.gov to see if the repair was performed.

EXTERIOR LIGHTING

SABERSPORT IS RECALLING 16,270 COMBINATION CORNER AND BUMPER LAMP ASSEMBLIES OF VARIOUS PART NUMBERS SOLD FOR USE AS AFTERMARKET EQUIPMENT FOR VARIOUS PASSENGER VEHICLES. THESE HEADLAMPS FAIL TO CONFORM TO THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 108, "LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT." THESE LAMPS DO NOT CONTAIN THE REQUIRED AMBER SIDE REFLECTORS.

EXTERIOR LIGHTING

CERTAIN AJ MOTORSPORT COMBINATION LAMPS SOLD AS REPLACEMENT LAMPS FOR USE ON THE ABOVE LISTED PASSENGER VEHICLES. COMBINATION LAMPS NOT EQUIPPED WITH AMBER SIDE REFLECTORS FAIL TO CONFORM WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 108, LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT.

What breaks on the 1991 Mitsubishi Eclipse?

Full reliability breakdown — engine, transmission, rust, electrical. With repair costs and mileage danger zones.

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Other Mitsubishi Eclipse Years to Consider

Compare KeepScores across nearby years of the Mitsubishi Eclipse. Click any year for its full report.

All Mitsubishi Eclipse years ranked →Mitsubishi Eclipse years to avoid →Mitsubishi Eclipse common problems →

1991 Mitsubishi Eclipse Alternatives

Similar class, similar year range — ranked by KeepScore.

1989 ToyotaLand Cruiser

1989 ChevroletCorvette

68/100

1989 FordTaurus

45/100

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