I've had my LS 400 for 11 years and it runs like the day I bought it. I have 172,000 miles and it still runs strong. When my Mercedes was totalled in 2006, I was back to driving my old LS 400 full time. I was planning to sell it and buy another car, but I was so impressed how it still drives, that I just decided to clean it up and keep it. Don't be cheap about maintenance. I do all service at the dealer, and have no problems. It passes smog tests with flying colors and the gas mileage is not bad for a car this size. I plan to keep this car for as long as i can!