Lexus IS owners have reported 78 engine and engine cooling related problems since 1996. Table 1 shows the 17 most common engine and engine cooling problems. The number one most common problem is related to the vehicle's engine and engine cooling (42 problems). The second most common problem is related to the vehicle's check engine light on (5 problems). For details of each of the problem category, use the links in the table.
This vehicle has a recurring, safety-critical defect involving intermittent engine misfires, flashing mils, reduced engine power, sudden loss of acceleration, and noticeable engine shaking. Despite multiple repair attempts and extended diagnostics by a dealership, with manufacturer technical Read details...
At 30,000 miles, we are being told that the engine needs to be rebuilt due to excess carbon buildup. It has been serviced through Lexus of concord through 8/17 and then Lexus monterey until present. I accelerated on the freeway to get in to the other lane but the car lost power. Read details...
Isfs year models 2008-2014 are affected the valley plate leak due to the fact that Toyota/Lexus utilized the improper sealant and used the improper amount, leading to the heat exchanger leaking coolant once the original, inadequate sealant begins to disentegrate. Read details...
The car has extremely high oil consumption. The cylinder walls have apparently prematurely worn down despite timely oil changes and maintenance. I am having to put 2 quarts of oil for every 1,000 miles at this point. Read details...
Rattle noise on start up from engine as if car has no oil Read details...