Working on a (relatively modern) Japanese car after only having dealt with ‘60s and 70’s British vehicles was a revelation. Standardised sizes and parts that actually fitted together. So great.
That's my experience of going from a German car to a Honda. I can take the Honda apart with a screw driver and a 6-19 wrench set and very little else. I required one hex wrench when taking off the whole front of the car.
German cars tend to have a bunch of hex and star wrench requirements, in addition to specialized tools for certain parts.
On the other hand, older cars did mostly have way more space in the engine bay.
My father used to tell a story of changing a water pump in his car when he was wearing a tuxedo--and not messing it up. Good luck doing that these days!
Miatas are pretty underrated in that regard - on the 1st gen (~1990) you can reach about everything without taking anything else of. Jobs that would take days (or hours in shop setting) to do on other cars take under 30 mins on the Miata. Notable examples are starter and brake booster - they are "right there", with a ton of space. You can't even get to the spark plugs easily on a lot of cars these days. (heh, "these days", now I sound old)
They're still a lot better than cars. In trucks you usually need to pull the cab for convenience. In cars you often need to drop the engine in order to do the repair at all. Some things (like a rear valve cover on a transverse v6) often don't have clearance to come off.
Realistically it doesn't really matter because it's easier to optimize for not breaking shit or fixing it before is strands you.
Space and Hondas: I took some skin off my right hand and fingers the last time I replaced a headlight on one--I had to get in behind the gravel shield.
