Lexus Is Years to AvoidThe weakest years — and the one you should buy instead
After reviewing every Lexus Is we've analyzed (25 years), these are the 1 weakest. Each one has either an absolute low reliability score, chronic repair issues, or unusually high ownership costs relative to other Is years.
Proceed with caution
2006 Lexus Is
The 2006 Lexus IS offers a compelling blend of luxury, performance, and impressive long-term durability, making it one of the safest used compact luxury sedans you can acquire. While the IS250 engine has a well-documented carbon buildup issue that demands proactive attention, the overall platform is exceptionally robust, delivering a premium driving experience without the typical European luxury car repair anxieties. Choose wisely, maintain diligently, and this Lexus will serve you for many years.
Why this year scores low
The 2.5L V6 (4GR-FSE) in the IS250 suffers from carbon buildup on the intake valves due to its direct injection design, leading to misfires, rough idle, and reduced power. This is a common and recurring issue.
The water pump on both 2.5L and 3.5L engines is known to develop leaks or fail prematurely. While not catastrophic if caught early, it can lead to overheating if neglected.
With age and mileage, front lower control arm bushings and possibly the power steering pump (leaks) are common wear items, leading to clunks, loose steering, or fluid loss.