Toyota oil filters.
I've owned at least six or seven Toyotas and changing the oil has been entirely straightforward on all. Even on the Corolla, I don't need to raise the car as long as I use a drain pan that fits underneath the engine.
On my Sienna with the cartridge oil filter, the oil filter comes with a little plastic widget. You remove a plug, pop in the plastic widget, and the oil in the filter drains.
No frame rails or exhausts in the way on any I've encountered. That said, I'm sure someone here has a tale of a Toyota with a real ******* of a filter...
In general, I've found Toyotas to be a lot easier to service than other brands. There are two major reasons for this:
1) Lots of parts commonality. Toyota tends to keep things the same for a long time, and use the same engines, brakes, etc. on many different models for many years, with very few mid-year or plant changes.
2) Higher quality fasteners. It's a small thing, but it makes all the difference after a few years of salt. I just did a bunch of suspension work on my 2002 Corolla with 430,000 miles and had no problems with stuck fasteners. That would be unthinkable on any Ford over two years old.
Toyota tends to leave a bit more room for servicing as well. Honda, for example, packs everything very tightly -- there's always a way to get things done, but you have to know the trick and have some talent at origami.
