426,000 and still going. Any 10 year old high mileage vehicle has the potential to need a lot on money in 6 months. Look at the front end, auto hubs and glow plug wiring. How long do diesel BMW engines last? Diesel engines are known for their longevity and typically last between 10,000 and 12,000 miles. This is largely due to the fact that diesel engines are built with higher quality parts and are not as susceptible to wear and tear as gasoline engines. The Ford V10 has a stellar reputation for reliability. Assuming the engine has been well cared for throughout its life, you can expect it to last at least 200,000 miles before needing to perform any major repairs. That means the big V10 shouldn't scare you away, unless 10 mpg on a good day frightens you, that is. Since this engine/tranny has only be out 30 months only time will tell. It's looking great so far though. What I can tell you, it is 3x's the truck/engine/tranny that the 7.3/4eod was, but miles and time will be the determining factor. 2012 F250- 6.7 Powerstroke Ultimate Lariat FX4- Tuxedo Black, Bakflip F1. Last summer, authorities approved an emissions fix for the oldest batch of scandal-plagued diesel (TDI) VW vehicles, a group of smaller models with four-cylinder “Generation 1” diesel engines The DD15 engine is rated at a million B50 life. This stands for a million miles, while the 50 is for 50% of all production model engines, meaning 50% of all produced DD15 engines will at least reach a million miles before requiring any significant repairs or overhaul. The B-life rating is the industry standard for projecting the supposed life It's more about fuel use then hours. But they are related. You can expect a rebuild between 30000 and 40000 gallons of fuel use. So if you burn 1gph for 20000 hours you're still in the workable life. So, how long do BMWs last? A BMW will easily last 150-200,000 miles if it is properly cared for and maintained. If you drive the national average of 13,500 miles, a BMW should last at least 10- 15 years. That said, there are many reports of BMW owners with 200,000+ miles on the clock without experiencing any major problems. With proper maintenance and care, most Porsche vehicles can cross the 150,000-mile mark. However, the longevity of an average Porsche car depends majorly on factors like driving habits, service history, etc. Below is a table showing the average number of years/miles different Porsche cars can last. It is perfectly safe to keep a gallon or two of DEF in your vehicle however it is not advisable. DEF will start to decompose at 86 F. It is very easy to forget about the DEF sitting in the back of your truck and given an extended period of hot days the fluid can become unstable and decompose but at a very minimal rate. 6sEuq.