IS500 engine reliability?
The IS 500’s 5.0-liter V8 is generally reliable by Lexus standards, especially when kept up with regular maintenance. Long-term data specific to this model is still building, but the engine family it uses has a solid track record in related Lexus/ Toyota performance models.
Overview of the IS 500 engine
The IS 500 uses the 2UR-GSE 5.0-liter V8, the same family found in the RC F and LC 500. It produces around 472 horsepower and roughly 395 lb-ft of torque, paired with an eight-speed automatic transmission and rear-wheel drive. The engine employs a dual-injection system (direct and port injection) to balance performance and efficiency, and it revs freely toward its redline, delivering the characteristic Lexus V8 sound and performance. This configuration has established a reputation for durability in related applications, contributing to the IS 500’s overall reliability profile.
Reliability outlook
What owners report
Below is a snapshot based on owner forums, professional reviews, and reliability surveys up to 2024–2025.
- Engine durability and build quality: The 2UR-GSE is a proven design that has shown strong long-term performance in RC F and LC 500 variants, with many owners reporting trouble-free operation when maintenance is kept up.
- Reliability ratings: Lexus models consistently rank high for reliability in major surveys; while IS 500-specific long-term scores are limited by its newer status, the underlying engine family carries a trusted track record.
- Common issues reported: Most reliability concerns are minor or related to routine wear items; carbon buildup can affect some direct-injection engines (though D-4S helps mitigate this), and occasional sensor or software glitches are not unusual in modern performance cars.
- Oil consumption and leaks: Broadly, the IS 500 does not have widespread reports of dramatic oil consumption, but owners should monitor oil levels like any high-performance V8 and address leaks or consumption promptly if noticed.
- Maintenance costs and service intervals: High-performance V8s generally incur higher maintenance costs than small-displacement engines, and timely service at a Lexus dealership or qualified shop is important for preserving reliability.
Overall, reliability is strong when the IS 500 is serviced on schedule with factory-recommended fluids and parts; issues tend to be minor and manageable with proper care.
Maintenance considerations and costs
To maximize reliability, focus on the maintenance tasks and best practices that specifically support a high-performance V8 like the IS 500.
- Adhere to the manufacturer’s maintenance schedule, including synthetic oil changes and routine inspections at designated intervals.
- Use high-quality oil and filters and follow the recommended viscosity and grade specified in the owner's manual.
- Address recalls and software updates promptly; keep an eye on Technical Service Bulletins (TSBs) for the 2UR-GSE family.
- Maintain the cooling system—coolant, hoses, radiator, and water pump—to prevent overheating, which can stress high-performance engines.
- Monitor for unusual oil consumption or leaks and have any concerns checked by a qualified technician.
- Be aware of potential carbon buildup on direct-injected engines; if performance or throttle response declines, consider appropriate intake valve maintenance as recommended by a dealer.
With proactive maintenance, the IS 500 engine should deliver reliable performance and longevity for many miles.
Buying used IS 500: what to check
When evaluating a used IS 500, use these checks to gauge reliability and remaining life of the engine and related components.
- Comprehensive service history, including regular oil changes and coolant service; verify adherence to Lexus maintenance intervals.
- Recall status and any open campaigns; confirm repairs have been completed.
- Engine health indicators such as unusual noises, misfires, or rough idle; consider a compression test if feasible.
- Warranty coverage eligibility, including any remaining factory warranty or certified pre-owned (CPO) protection.
- Signs of carbon buildup or intake-related issues, especially at higher mileage; assess throttle response and intake cleanliness if applicable.
- Inspection of cooling and accessory systems (water pump, hoses, belts) and of the timing chain area for any signs of wear or leaks.
Thorough due diligence helps you select a reliable IS 500 with a solid long-term outlook.
Summary
The Lexus IS 500’s 5.0-liter V8 is a robust, performance-oriented engine that aligns with Lexus’ overall reliability reputation. While long-term, model-specific data is still accumulating, the engine family’s track record in RC F and LC 500 supports favorable reliability expectations when properly maintained. Potential concerns, such as carbon buildup and higher maintenance costs typical of a high-performance V8, should be managed with regular service and careful ownership. For prospective buyers and current owners, sticking to scheduled maintenance, staying current on recalls and software updates, and monitoring for signs of wear will help maximize the engine’s reliability and enjoy its enduring performance.
How many miles will IS500 last?
The engine used in that car routinely gets well over 200k miles and I know of a few over 400k without any real issues other than the valley plate leak.
Is the Lexus IS 500 expensive to maintain?
A Lexus IS 500 will cost about $6,479 for maintenance and repairs during its first 10 years of service. This beats the industry average for luxury coupe models by $5,937.
Who makes the IS500 engine?
Lexus then launched F SPORT in 2008, with the 416-horsepower V8-powered IS F. So now here we are again with that same 5.0-liter naturally-aspirated V8 engine setting this IS 500 in motion. It's been updated of course, 472-horsepower and 395 lb-ft.
Is the Lexus IS 500 a good daily?
If it's a daily driver I would go with the IS500 hands down. It's going to be a much more comfortable cruiser with sufficient power to sufficient power for some fun. Obviously it's not going to handle as well on a track but how often are you going to run into a track like condition on the street.
