Lexus IS250, IS350 and IS-F (XE20) 2005-2013 Review
Owners report that these models are very reliable.
As the engines use direct-injection, they can suffer from carbon build-up that can cause poor running. This mostly affects the IS250 as the other engine options have both direct and port fuel injection.
V6 engines can have variable valve timing system problems that cause a rattling sound on start-up.
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