Mitsubishi · Known Issues

2010 Mitsubishi Eclipse Problems: 2 Issues Every Owner Should Know

2010 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated June 2026

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2010 Mitsubishi Eclipse has 2 documented known issues, with 1 rated critical. The most serious is Timing Belt Tensioner and Water Pump Failure ($400-$1,200 repair). Across all issues, repair costs range from $300 to $2,500. DIY maintenance guides at au7o.io.

All 2 Known Issues

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On the 2000-2012 Mitsubishi Eclipse, the Eclipse timing belt tensioner hydraulic damper fails, allowing the timing belt to become loose and potentially jump teeth. The water pump, driven by the timing belt, also develops bearing failure and coolant leaks. These failures are particularly common on the 4G64 and 4G69 engines.

This issue also affects: Acura MDX, Renault Clio

Common Symptoms

Squealing or chirping from timing cover
Coolant leak from water pump weep hole
Engine misfiring or rough running
Timing belt visibly worn or cracked

How to Fix

Replace the timing belt, tensioner, idler pulleys, and water pump as a complete kit every 60,000 miles. Use only OEM or premium aftermarket timing components. Do not reuse the old hydraulic tensioner.

Typical repair cost:$400 - $1,200

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Community Reported

High Confidence0 reportsLast reported by owners Invalid DateReviewed Invalid Date

On the 2000-2012 Mitsubishi Eclipse, the 3.0L 6G72 and 3.8L 6G75 V6 engines in the Eclipse GT develop excessive oil consumption over time. Worn valve stem seals and piston ring glazing allow oil to enter the combustion chambers, producing blue exhaust smoke and requiring frequent top-offs.

This issue also affects: Dodge Stealth, Mitsubishi Endeavor, Mitsubishi Galant

Common Symptoms

Blue smoke from exhaust
Oil level dropping between changes
Fouled spark plugs
Catalytic converter degradation

How to Fix

Replace valve stem seals as a first step. If consumption persists, the piston rings may need replacement. Use high-mileage synthetic oil with seal conditioners. Monitor oil level every 1,000 miles.

Typical repair cost:$300 - $2,500

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Community Reported

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Frequently Asked Questions

What are the most common Mitsubishi Eclipse problems?

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2010-2010 Mitsubishi Eclipse has 2 documented issues. The most frequently reported are: Timing Belt Tensioner and Water Pump Failure, V6 Engine Oil Consumption. Of these, 1 is rated critical and should be addressed promptly.

Is the Mitsubishi Eclipse reliable?

The 2010-2010 Mitsubishi Eclipse has 2 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 1 issue is rated critical: Timing Belt Tensioner and Water Pump Failure. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Mitsubishi Eclipse problems?

Repair costs for known Mitsubishi Eclipse issues range from $300 to $2,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Timing Belt Tensioner and Water Pump Failure, typically costs $400-$1,200 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2000-2012 Mitsubishi Eclipse Timing Belt Tensioner and Water Pump Failure?

The Eclipse timing belt tensioner hydraulic damper fails, allowing the timing belt to become loose and potentially jump teeth. The water pump, driven by the timing belt, also develops bearing failure and coolant leaks. These failures are particularly common on the 4G64 and 4G69 e… Repairs typically run $400-$1,200. Severity: high.

What is the 2000-2012 Mitsubishi Eclipse V6 Engine Oil Consumption?

The 3.0L 6G72 and 3.8L 6G75 V6 engines in the Eclipse GT develop excessive oil consumption over time. Worn valve stem seals and piston ring glazing allow oil to enter the combustion chambers, producing blue exhaust smoke and requiring frequent top-offs. Repairs typically run $300-$2,500. Severity: medium.

2010 Mitsubishi Eclipse Problems: 2 Issues Every Owner Should Know

All 2 Known Issues

2000-2012 Mitsubishi Eclipse: Timing Belt Tensioner and Water Pump Failure#

Common Symptoms

How to Fix

Research This Issue

2000-2012 Mitsubishi Eclipse: V6 Engine Oil Consumption#

Common Symptoms

How to Fix

Research This Issue

Other Mitsubishi Models

Frequently Asked Questions

What are the most common Mitsubishi Eclipse problems?

Is the Mitsubishi Eclipse reliable?

How much does it cost to fix common Mitsubishi Eclipse problems?

What is the 2000-2012 Mitsubishi Eclipse Timing Belt Tensioner and Water Pump Failure?

What is the 2000-2012 Mitsubishi Eclipse V6 Engine Oil Consumption?