I once owned a 1998 VW diesel Beetle (If I remember correctly the ‘98 was the first year of the “new“ Beetle). The engine and 5 speed manual transmission was fantastic. The electrical system on the other hand was a nightmare. The “smart key” was designed to lock the doors if you stuck it in the lock and temporarily bumped it clockwise however every other time it would let down one or more windows and not lock either doors. I thought Land Rover had a monopoly on crappy electronics but I was wrong.Great little cars the Mk4 as long as you get the 5spd. Drove one for years and tons of reliable miles.
Of course they all suffer from 1 major flaw:
Engineering: we made the door locks sir, simple, they work and can easily be fixed.
VW: We aren’t Toyota, make it complicated.
Engineering: ok…we’ve added more levers sir.
VW: still not enough. Add vacuum lines to the door locks, more levers, make it very hard to work on and so that it fails in the cold.
Engineering: say less.
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Insert almost every VW body part/electrical part into that conversation. They are really good about taking something simple and complicating it needlessly the engines…great!