My ex-GF (biker chick) has a 2016 Beetle convertible Denim Edition which she (of course) calls Levi. She's up to almost 100k on it and in the 5 years I've known her, I don't think she's had a single thing wrong with it. She called me one day because a light was on the dash which I noticed was low coolant so I topped it off with water. She was concerned about a leak and I had to explain to her that 100k miles is a miracle she only had a couple tablespoons of water missing. Having said that, it is a whopping pile of E36 M3 IMO. It has the 2.0T which is peppy, but the way VW does their automatics it's almost like they use some kind of PWM signal to make it act more like a CVT and it's frustrating as hell. The brakes are nothing short of wacko. One has an expectation when they get in a vehicle that the brake pedals will all be at least vaguely similar in effort and travel. You can go from a GMT400 to a BMW E90 and at least expect that you won't either ram into the car in front of you because they're way stiffer, nor do you expect to lock up the brakes because they're way less effort. In the Beetle, the slightest whiff of pressure on the pedal causes nearly instant and aggressive brake application, and it has been that way since new. About once a month, the car will be in the garage, locked, and the keys in her purse, and the radio will suddenly come on for no reason. We would be watching TV or making dinner and all of a sudden... random music from the garage.
The 2013 Fiat 500 I borrowed for a week was a fun, peppy car as long as you get the 1.4L over 3500 rpms. The shifter was sloppy and the clutch was a mess. The distance from where it started to engage until it was fully engaged was about the size of Texas. It had the typical punishing and loud ride one would expect, and even though the Beetle is a rag top, it feels like a Mercedes compared to the 500. Consistent "check running lights" and "check stop lamps" on the dash despite changing them... and get this.... They are 1157 bayonet bulbs. Not 3157 or something decent... they are old-fashioned push and turn stop lamps.
The Beetle feels like a finely-executed German car should, but with all the electrical gremlins that a German car is expected to have. The Fiat felt like a tupperware with wheels, but a remarkably well-assembled tupperware.
I can safely say that if I were in the market for either the Fiat or the Beetle, I would promptly choose the Mazda. If you're looking at the Crayola years of Beetle (the first "new" beetle with the interior that turned into sticky wax that smelled like a crayon box), you're ahead of the game if you stab your eyes out with a fork so you can't drive. Ok, maybe not that bad, but 98-03 VW is about the only thing that kept our repair shop profitable. Parts are highly proprietary, most of the rights are still held by VW, and a oil breather hose was $181 wholesale in 2008. The ovate o-ring fitting on one end and the oval snap fitting on the other end meant it wasn't something you could replace with $4 of generic rubber hose, and the VW piece was made from the same plastic as split wire loom that started to degrade in minutes. They also had the lovely 6-million-point diagnostic ECMs that monitored the power seats, windows, radio, and HVAC. If you didn't know what you were doing, installing an aftermarket radio caused - not only a CEL - but it defaulted pin #7 in the ALDL to 12v instead of 5v. Best case scenario was no communication with the scanner. Worst case was a fried scanner. Don't even get me started on timing belt changes that required removing a 5" wide motor mount through a 3/4" space, or A/C compressors that the book says you have to remove the front bumper... and fenders because they're all one piece... to get to it.
Fun cars, and not quite as apocalyptic as I paint them to be, but they can be seriously frustrating. You get a CEL frequently and you pray that it's a small evap leak that can be fixed with a new gas cap, because most of the other CELs are several hundred dollars at the VW parts counter to fix. Again... not the end of the world, but VW is a master at making sure you open the bigger wallet at their parts counter instead of pocket change at Auto Zone.