Is the 2008 Lexus IS-F reliable?

The 2008 Lexus IS-F is generally reliable for a performance-luxury car from that era, though maintenance costs and complexity are higher than on non-performance IS models.

This article examines how reliability is viewed for the IS-F, what owners tend to report, common issues to watch for, and practical tips to keep one running smoothly as it ages. It blends manufacturer reliability expectations with real-world ownership experiences to help buyers and current owners gauge long-term dependability.

What affects IS-F reliability

Several factors influence long-term reliability for the 2008 IS-F, from engine design to maintenance history and parts availability. The following considerations summarize the key points experienced by owners and service data.

• Engine design and durability: The 2UR-GSE V8 is robust, but as a direct-injection, high-performance engine, it benefits from regular, thorough maintenance to preserve internals and fuel system integrity.


• Maintenance history: Regular service, timely oil changes, cooling system care, and prompt attention to leaks or unusual noises strongly affect long-term reliability.


• Parts availability and service: As an older, performance-oriented Lexus, access to skilled technicians and certain performance parts can influence upkeep costs and upkeep quality.


• Usage patterns: Daily driving with spirited use can accelerate wear on clutches, brakes, and suspension components compared with gentle, freeway-only commuting.


• Age and mileage: With more than a decade on the clock, aging seals, gaskets, and hoses are common wear items that can impact reliability if not addressed.

Overall, a well-documented service history and careful ownership can yield solid reliability for the IS-F; neglect or high-mileage wear can lead to more frequent repairs or component replacements.

Common issues and recalls

Owners report a few recurring concerns on the IS-F, along with recall campaigns that may affect specific VINs. The following categories highlight areas where vigilance is useful when purchasing or maintaining an IS-F.

Engine and fuel system

These items reflect typical engine and fuel-system considerations for aging IS-F models.

• Carbon buildup and fuel/injection wear: Even with D-4S dual injection, intake valve deposits can occur, especially with a lot of short-trip driving.


• Oil leaks and seals: Valve cover gaskets and associated seals can develop leaks as the engine ages.


• Cooling system wear: Water pump, radiator hoses, thermostat, and related components may need attention to prevent overheating.


• Tensioners/chain wear: Timing-chain-related components can wear over time, potentially producing unusual engine noises if not serviced.


• Fuel-system aging: High-pressure fuel pumps and injectors can show age-related performance changes and may require inspection or service.

Regular inspections and a proactive maintenance plan help mitigate these issues and keep the engine operating smoothly.

Drivetrain and electronics

These items cover the transmission, clutch, and electrical systems commonly watched for in older IS-F cars.

• Clutch wear (manual variant): High-performance use can accelerate clutch wear, potentially leading to slipping or heaviness in pedal feel over time.


• Transmission and shifting: With age, some owners report stiffer or less precise shifting; routine fluid changes and drivetrain checks are important.


• Suspension and steering components: Struts, bushings, ball joints, and control arms can show wear, affecting handling and ride quality.


• Electrical gremlins: As with many aging luxury vehicles, intermittent electrical issues (sensors, dashboards, or infotainment interfaces) can occur.

Addressing wear promptly and using a technician familiar with Lexus performance models can mitigate these concerns.

Recalls and service campaigns

VIN-specific recalls and safety campaigns are important to verify before purchase, as they may address critical safety components or reliability fixes.

• Takata airbag recalls: As with many older vehicles, IS-Fs may be affected by airbag-related recalls depending on production date and region. Ensure all applicable recalls are completed.


• Other manufacturer campaigns: There may be additional service campaigns related to fuel, electronics, or cooling systems; check the VIN against official recall databases.

Confirming recall completion via VIN lookup and ensuring the dealer has addressed any campaigns is essential for a reliable ownership experience.

Ownership and maintenance tips to maximize reliability

To keep the 2008 IS-F dependable, follow a disciplined maintenance plan and verify history before buying.

1. Obtain full service history and verify major items: engine oil, cooling system service, timing-chain-related work (if applicable), clutch (for manual), and transmission service.


2. Have a pre-purchase or ongoing inspection by a technician experienced with Lexus performance vehicles to check for leaks, unusual noises, and wear patterns.


3. Check for all recalls and open campaigns using the vehicle’s VIN; ensure any required repairs are completed.


4. Inspect the cooling system, oil seals, and valve covers for leaks; address promptly to prevent longer-term damage.


5. Assess clutch and transmission condition (if manual) and listen for grinding, slipping, or rough engagement; address wear early to avoid further damage.


6. Budget for maintenance and parts costs typical of a late-2000s performance Lexus, which can be higher than non-performance IS models but benefits from Lexus reliability DNA.

When well cared for, the IS-F can deliver consistent performance and reliable operation as it ages, reinforcing Lexus’ overall reliability philosophy in a high-performance package.

Summary

The 2008 Lexus IS-F generally earns a favorable reliability outlook for a late-2000s performance sedan, especially when backed by thorough maintenance and careful ownership. Its Toyota-Lexus engineering heritage supports durable operation, but owners should be prepared for higher-than-average maintenance costs and potential age-related wear in engines, cooling systems, clutch/transmission, and electrical components. A meticulous service history, proactive inspection, and VIN-specific recall checks are the best safeguards for long-term dependability, helping the IS-F remain a spirited yet dependable choice for enthusiasts and daily drivers alike.

How reliable is the Lexus IS-F?

The Lexus IS-F is considered very reliable, largely due to its robust naturally aspirated 5.0L V8 engine and its durable build, which often leads to a strong resale value. While most owners report few major issues, common maintenance concerns can include potential leaks from the valley plate or plastic and rubber hoses in the engine bay. To ensure long-term reliability, proper maintenance and a pre-purchase inspection are recommended, especially to check if the car has been excessively modified.
 
This video discusses the reliability of the Lexus IS-F and its engine: 57sThe Car Care NutYouTube · Aug 20, 2025
Strengths

• Engine and drivetrain: The 5.0L V8 engine is known for being very durable and can achieve high mileage with proper care. It's also highly reliable, avoiding the common catastrophic issues found in some competitors. 
• Build quality: Overall, the car is considered "rock solid" and has a strong reputation for reliability, with many examples still running well after hundreds of thousands of miles. 
• Resale value: Its strong reliability contributes to a good resale value, as it is less likely to require expensive major repairs than many European rivals. 

Potential issues and maintenance

• Engine leaks: A common issue for the V8 engine is a leaking valley plate or heat exchanger, located under the intake manifold.
• Hose and connector degradation: The high engine temperatures can cause plastic and rubber hoses and connectors to become brittle and crack over time.
• Valve covers: Leaks from the valve covers are also a potential issue.
• Modifications: While it's generally a reliable car, modifications can sometimes lead to problems if not done correctly or if they're removed improperly. It is recommended to have a car inspected before purchase to ensure any modifications are minor and not hiding a potential problem. 

This video explains the potential issues with the Lexus IS-F's engine: 33sDadcarsYouTube · May 24, 2025
Recommendations

• Pre-purchase inspection: A thorough pre-purchase inspection is crucial, especially given the car's age, to check for hidden problems.
• Maintenance: Perform regular maintenance, and it is recommended to do an initial oil and transmission fluid change to start with a clean slate.
• Check for modifications: If the car has been modified, it is important to have a professional check it to ensure the modifications were done correctly. 

Are 2008 Lexus ISF reliable?

Great car for a family car enthusiast. Comfortable. Handles like a sports car and gets got gas mileage. Very reliable, no issues whatsoever.

Is 2008 a good year for Lexus?

Among the 455 owners who provided feedback on the 2008 Lexus IS for Kelley Blue Book, consumer sentiment is overwhelmingly positive, with 95% recommending the vehicle. As a whole, consumers found the vehicle's quality and reliability to be its strongest features and value to be its weakest.

How many miles does a 2008 Lexus IS350 last?

A 2008 Lexus IS 350 can have a life expectancy of over 200,000 miles with proper maintenance, but the exact lifespan depends heavily on its service history and driving conditions. With diligent care, many owners report reaching 300,000 miles or more, while the average projected lifespan is around 183,000 miles or 16.9 years, based on data from iSeeCars.com. 
Factors that influence lifespan

• Maintenance: Following the manufacturer's recommended service schedule for oil changes, fluid flushes, and part replacements is crucial for longevity. 
• Driving habits: How the car is driven—whether with aggressive acceleration or careful cruising—impacts wear and tear. 
• Immediate repairs: Addressing any issues promptly, rather than letting them worsen, helps prevent major, costly problems down the line. 
• Specific model issues: Some sources note potential concerns in the 2007-2010 model years, such as oil leaks, so it's important to check the specific vehicle's history. A preventative maintenance item for some is replacing the rubber oil cooler line with a metal one. 

What to consider when buying a used model

• Service history: A well-documented maintenance history is a strong indicator of a car that has been cared for. 
• Professional inspection: Have a mechanic thoroughly inspect the vehicle, including the engine and transmission, before purchasing to identify any potential issues. 
• Vehicle condition: Assess the overall condition, including suspension and other components, as this will significantly affect its remaining lifespan.