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.
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.
Is this true in new trucks? Half the time it seems maintenance begins with removing the cab and removing the truck from the engine.
Realistically it doesn't really matter because it's easier to optimize for not breaking shit or fixing it before is strands you.