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EnginePart report

2008 Lexus IS Engine Problems

Complaints
22about this part
Share
22%of 102 total for the year
Median mileage
104,000miles
Trend
FallingComplaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.

NHTSA recorded 22 complaints about the engine of the 2008 Lexus IS, 22% of the 102 complaints for this model year. Where a mileage was given, the median is 104,000 miles.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“Ever since I had this car, I always had the constant problem of a weird engine smell of rotten eggs, it overheats out of nowhere constantly after multiple repairs and maintenance paid out of pocket. It would shut off while driving anywhere. These are just some of the receipts.”

NHTSA complaint #11323801, filed 2020-05, 150,000 miles

“It IS known as the valley plate leak. And it's radiator fluid leaking out which causes damage to the compression and also causes the vehicle to over heat easily. It happened when I let the car sit and started it and I noticed the valley plate started leaking.”

NHTSA complaint #11320463, filed 2020-04, 100,021 miles

“I took my car to the local dealer for the carbon buildup recall in the motor. They rebuilt parts of the internal motor. After they rebuilt the motor for carbon build up, my engine light started to light up for bad catalytic converter. I told them that the light never showed up before and could've went bad from all of the miles of carbon build up that damaged the catalytic converter. They couldn't repair the catalytic converter because I was out of the warranty period.”

NHTSA complaint #11051082, filed 2017-11, 104,000 miles

“My Lexus isf has a cracked passenger side manifold which IS very audible on startup and beginning signs of a valley plate coolant leak, which will eventuallylead to engine failure. These cars were made in very low numbers, however our car enthusiast community IS experiencing these failures in a higher than acceptable numbers of this rare vehicle. Each repair IS many thousands of dollars and (valley plate 2k-5k) (manifold quoted at 22 hours labor and 1400 for the part from Lexus) taken into account the low production number and high rate of failure, this must be addressed. …”

NHTSA complaint #11320597, filed 2020-04, 110,200 miles

“In august 2012 my car's engine light and vsc light came on. I took the car to the dealer and they found multiple misfires. The dealer replaced the gasket and 3 pistons and ring sets under warranty. My car engine has continued to intermittently shudder when moving and when idling at stop lights. Today (1/3/17) I was driving on the highway at normal speed and once again my engine light and vsc light are lit up. I received the 9 year extended warranty for carbon buildup, but it only covers me through 3/8/17. If I have carbon buildup again after that, it will cost me $2,000-$3,000 to fix. …”

NHTSA complaint #10939530, filed 2017-01, 104,000 miles

Related service bulletins

Engine: other model years

YearComplaintsShare of year
2023120%
2020233%
2017218%
2015111%
2014325%
2013333%
201216%
2011213%
2010410%
200938%
20082222%
200765%
20061611%
2003325%

Other parts of the 2008 Lexus IS

Other or unknown
24 complaints
Body and structure
22 complaints
Air bags
21 complaints
Visibility (wipers, defrost, mirrors)
13 complaints
Fuel system
7 complaints
Electrical system
6 complaints
Transmission and drivetrain
5 complaints
Steering
4 complaints
Vehicle speed control
4 complaints
Exterior lighting
3 complaints
Seat belts
3 complaints
Brakes
2 complaints

← All problems reported for the 2008 Lexus IS

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology