Welcome to the site
As far as long term tests/reviews, there are multiple people with well over 20-25k miles on their F's thus far with no problems what-so-ever. I haven't heard or talked to anyone with tons of miles on their F's as it is still a relatively new vehicle (2008 was the first year it was introduced incase you didn't know). If you like to read magazine articles, one magazine has conducted a long-term review on the F (I can't remember if it's Road and Track or Car and Driver). I would check that out if you had the chance. I would also read on this site as well as clublexus.com in their IS-F section as many people have posed similar questions to yours. There are also a lot of reviews/comparisons between the F, C63 and M3 that have been typed up by members of the sites.
One thing to remember with Lexus is that you're getting Toyota reliability with their vehicles. Toyota is known throughout the world for it's reliability and long term success. I hope this helps, please feel free to ask any other questions.
As far as long term tests/reviews, there are multiple people with well over 20-25k miles on their F's thus far with no problems what-so-ever. I haven't heard or talked to anyone with tons of miles on their F's as it is still a relatively new vehicle (2008 was the first year it was introduced incase you didn't know). If you like to read magazine articles, one magazine has conducted a long-term review on the F (I can't remember if it's Road and Track or Car and Driver). I would check that out if you had the chance. I would also read on this site as well as clublexus.com in their IS-F section as many people have posed similar questions to yours. There are also a lot of reviews/comparisons between the F, C63 and M3 that have been typed up by members of the sites.
One thing to remember with Lexus is that you're getting Toyota reliability with their vehicles. Toyota is known throughout the world for it's reliability and long term success. I hope this helps, please feel free to ask any other questions.