The 2005 Cadillac STS should be able to last over 200,000 miles with proper maintenance. It is a well built vehicle and the vital components should be able to last. The most important thing to do to make Your vehicle last a long time is get all of the services done. Doing simple things like getting the fluids changed in Your car can help prevent excessive wear and tear on the engine and other components. When You get scheduled maintenance done it is also a good opportunity for a mechanic to get a chance to inspect Your car. If You fix small problems when they come up they are easier and cheaper to fix than large problems.
Martin K
July 16, 2020
The 2005 cadillac sts life expectancy is 200,000 miles
If you take care of it, it should last longer than 200,000 miles...
andrew lego
June 16, 2022
Used axle grease in engine for lubrication,engine kinda sluggish. Front end does not hold up well after hitting cement wall at 80 mph.
Gary D
September 5, 2021
My STS northstar engine blew the timing chain guides at 200,000 . This may have been caused by poor maintenane early in its life as there was a lot of sludge in the engine after repeated flushes.
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