It seems to be the typical coating that is sprayed over normal ABS plastic. It's this latex-like powder or spackle-like stuff. In fact, it's almost like what you'd find on an older-style Apple USB keyboard. Those black Pro keyboards have that rubber goop as well, but it doesn't melt. Skin oil isn't what cases the melting - it's the UV exposure, heat, and lack of oxygen inside the car. Pressing one's fingers on it is what agitates it more.
That's incorrect. If that was the case, my MBZ's buttons would have washed out by now. It hasn't. And it gets parked under the sun at work 4 days a week, and has since 2010. If it were really a case as you describe, rarely touched buttons in much older cars (see:beaters) would have that worn/melted look, but they don't. These are 30 year old cars beat to hell and back, but they don't suffer that "melting" you describe. ABS plastics are vulnerable to acids, and your skin oil is weakly acidic. Skin oil causes it. If it didn't, you wouldn't see that "melting" of plastics in home devices such as a keyboards, computer mice, remote control bottoms, etc. The list goes on. Cheap matte coating was applied in VWs and probably your Maserati. Quality production in quality cars introduces the matte through production. As in, the buttons are formed with said coating. This leads to a longer life of the surface area before the oils have a chance to weaken the plastics surface. Finger oils capable of damaging stainless steel appliances, albeit aesthetically. Typically, they're easy to clean off with alcohol but if left on for too long, they'll burnish the metal and you'll require strong chemicals or you have to buff it out. It's the bane of households. Brushed stainless steel impedes it a bit.
Going back to the buttons, VAG cheaped out years ago and stopped only a few years ago with buttons that were dyed black and then a symbol imprinted onto them. Skin oils would slowly weaken this dye and cause rubbing off over years. I refuse to believe that hitting you windshield heater button once a day in the morning with your finger 2 months out of the year would cause severe wear two years later. BMW E46's suffer from this as BMW were cheap twits and used a cheap matte coating that would fade or rub off within a year or two of ownership. I recall reading years ago about an owner rubbing one of the spokes off and saw the coating crumble off. We had this discussion in June. Here's the case of production ABS whereby the matte coating was done during the formation cycle and not applied thereafter.
https://forums.macrumors.com/threads/the-car-thread.1766143/page-149#post-22980663
Keyboards are not exposed to harmful UV rays, they're not in an oxygen deprived environment, they're not exposed to 100*+ heat that's common inside a car in SoCal summers, and they're not coated with a cheap coating because they'd wear away far too quickly. Stop making excuses for the awful QQ Maserati has always had.
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As for the random topic of reliability, the Maserati has actually been okay, considering it isn't driven much. (The more miles, the better - all except for clutch wear. Ours just hit 26k miles.) It has had computer issues in the past, and it recently went in for a tune-up, but it's otherwise holding up. These Maseratis aren't horribly unreliable. Issues do exist, but they are VERY specific. For example, it's easy to damage the clutch on the 2004-2006 models, and rapid clutch wear in general seems inevitable. The clutch alone is about $8,000 to replace. There are also two other very specific common issues, but I forget exactly what they are. I don't think ours has the issues, though. And, other than that, computer issues seem rather common. In all, though, it's still more-or-less dependable. One can feel comfortable taking this on a road trip. Let it sit and you've got problems. And, if anything bad happens to it, it's likely a freak issue.
I'd actually say that the interior may be more unreliable than the mechanics. Again, ours has only 26k miles, and we've already had melted buttons, a broken passenger visor, rear cupholders that wouldn't stay closed and now won't open; cracked front passenger door frame (causing door to not open from inside); leather flaps below/behind driver seat slumping down (due to its clips being broken); ripped leather wrapping on corners of rear console; small air bubble on dashboard; and the dashboard glove compartment sags on one side, since the designers thought it would be fine to have the door held up with a single latch offset to left.
Sad to hear of a worn clutch on a car with so little miles. Quite sad since issues like this are still common with Maseratis, especially their computers, plural that is. The issue with the interior is because they cheaped out. They're not the only ones. BMW, MBZ, Audi, Jaguar, etc. cheaped out at one point. Quality is much better now. There was a huge race in the 2000s to use new production methods, glues and whatnot to save weight. Next gen materials, if you'll call it that. C&D did a lengthy article in 2003 or 2004 about it. Suffice to say, cars of the 70s and 80s and most of the 90s used metal clips to hold everything in place. From headliners, to the rubber barriers on doors, the carpet, etc. All of it now glued. Glue tech is way better now than it was then. The metal clips used in the past added up in terms of weight and cost. BMW uses epoxy glue to form large parts of their cars and does spot welds. The result is a lighter car with tougher areas than a car with pure welding. It's rather interesting.
As for the leather, there's plenty of aftermarket companies you can order new seat covers from. Given they're custom made to the car and customer's tastes, expect to drop up to $7,000.
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The interesting thing is that, in spite of all this, the car is beautiful enough to drive that it's worth an occasional headache maintaining it. I have yet to drive a sedan that handles as gracefully as this one does. It takes a sharp turn like it's nothing; you don't feel pressed against one side of your seat when taking such turns - it just happens as nonchalantly as though the car were going around said turn at 10 MPH. And, even though it has power steering that takes a single finger's-worth of pressure to control, the driver isn't completely isolated from the road - one can still feel the road to the point where it elevates the driving experience. My dad test drove a 2012 QP, and he said that it drove beautifully; however, he liked the driving style of our QP better, as the 2012 model was far less rugged and much less rough - thus making for a quieter and less exhilarating ride. He compared the 2012's driving style to that of a BMW sedan's. Quite a bit more cushy than the style of the '05 QP. That's not necessarily a bad thing, though, because the '05 QP is honestly too rough to be considered practical. The 2012, on the other hand, could be a daily driver. It's somewhat of a chore to drive ours. You have to not be doing chores in the first place when driving it. It isn't an errand-mobile. The gas pedal needs to be pressed with such care, as the tires spin with barely any pressure, and, since it's technically manual, the car doesn't get to gun it immediately from a stand-still. People behind me are on the verge of honking when I'm beginning to go at a green light. More pressure and the tires will sing. Luckily, it's not rough in terms of its general ride. It has possibly the best suspension I've felt - it's rigid and sport, yet, on bumps, it feels as though I'm on a water bed. Going over a speed bump with this car is so satisfying. As for brakes, they feel pretty stiff, but they have this immediate catch at the very end that's reassuring. It's a bit difficult, though, to stop abruptly and comfortably at the same time.
I had a neighbor who bought an 04 or 05 QP. His main daily was a Chevy Tahoe or Suburban. The QP was not a practical car for him. It was a mid life crisis car. They moved away years ago, but I recall him often complaining about the reliability and how impractical the car was for most things, even light grocery shopping. At that time, the most popular car in the US with those who had the ability to pay for it was the Range Rover by Land Rover. I can't recall if it was the new styling that made it very popular or because Paris Hilton drove one at the time. Land Rover quality is terrible, but they always sell at full market value simply because people associate the brand with every shmuck you saw on E TV or MTV.
The new "to have" SUV now is the X5 and the Cayenne. There was a period in the mid 2000s where you could drive through our area and almost every house had a Range Rover, in either white, silver or the champagne-silver color. Sometimes you'd see a mineral gray one that caught your eye. I rented a Range Rover once for a road trip to Mammoth and that thing was a pain in the ass to drive. On the way back home the next week, the navigation decided to malfunction. It had around 20K miles on it at the time. There were no less than 20 of them in the city center. I spent 15 minutes going up to each one to find my rental.
As far as easy driving goes. I won't comment on driving old RR's, but new cars with all electric steering are stupid simple to drive. Go drive the new E300. It's got EPS. The car will add weight when turning sharply or on a corner to inspire confidence. Other than that, I had fun during my test drive steering the car with 1-2 fingers. Which made the salesman a bit nervous even though he's sold me a few cars already. The car is quite smooth and relatively quiet for a 4 banger. I have hopes the E400 will pack some power. I really hope MBZ brings in an AMG model so I don't regret not ordering the last gen for cheap while it's still on lots. MBZ did a lot to improve the E over the last generation. I wouldn't advise people to get the E300 because I felt the engine lacking. I simply like having more power. More is always better. I think it's a fantastic city driving car though. It's incredibly torquey given its low-ish output and small engine. Very little effort is needed to drive busy streets. You realize it's a 4 banger when you're given the go by the salesperson to floor it on an open street. The count the 50 MPH was slow but it was also very noisy. Typical of a 4 banger. I don't think we'll see a E250 diesel anytime soon.
Regardless, while the E300 is a nice mid level MBZ, it's not for around $55,000 with some options.