Most of the good folk here are US residents so I thought I'd get some insight. I've been wondering of late on certain differences between car maintenance between Europe and the US and I wonder what is it exactly. I mean, some differences are easy to understand due to car models and being imports, such as Mercs and beemers are considered high maintenance and expensive to maintain, whereas in Europe they aren't really at all - that's understandable since in the US they are import parts and thus more expensive, and also they apparently only sell the most tricked out and special gasoline models in the US, not at all the normal trusty and cheap to maintain basic diesel models we use here (can't remember when I last saw a mercedes not running on diesel really)...and it's vice versa too. US cars can be horribly expensive to maintain here. It's no mystery BUT there's a couple other quite strange details when it comes to car maintenance accross the pond: 1. It seems people in the US change their oils HUGELY more often than we do. I often change my oils like every 12,000 miles or so. Sometimes less. My current car is a mercedes with a 100K miles on it, and it's only visited service seven times during that time. making oil changes about 15K. Why would you change oils very often? The engine will run 400,000 miles even with 15K intervals without a problem anyway. 2. Tyre rotation. What's up with that? I've NEVER rotated tyres, or heard anyone do that. But it appears to be standard practice in the US. Why? Maybe it's related to third q: 3. Wheel alignment. Apparently that's done quite often in the US. Like even yearly(?) I have NEVER aligned any wheels in my cars, unless it's gotten new lower arms or something like that. and usually that means cars driven 200K miles already. I've had cars driven 300,000 miles and never had the wheels aligned, and no uneven wear on tyres. I'd say it's very very rare here to have wheels aligned normally. Out of hand, I can't even name a shop that could do it locally here. Perhaps the huge tyre emporium has the devices, regular service garages definitely don't. Why is it deemed necessary to do often in the US? Or are people I've talked with on the car forums full of it and just pulling my leg about all this?