wcelliot wrote:
speedblind wrote:
2. Re: gov't regulations - yes, cars are going to be a lot heavier due to all the crap that a. safety regulations demand and b. modern consumers demand. Hint: option b adds more weight than option a. By a mile.
Actually, I think you'll find that the other way around.
All those power options _do_ add weight, but not nearly as much as the structural and safety additions required by regulation. Again, look at the Smart car as an example... over 15% heavier with the same basic options both here and there... or the new Fiesta (~19% heavier here... at least compared to the previous generation... the current Euro generation got a lot of the US DOT structural and safety "adds")
I don't think you're going to see convenience additions approaching 15% of a car's weight... even if you're adding in items like AC (which is common enough in Europe now that you can't fairly count it) much less adding more weight "by a mile"
I would've thought it the other way around too, to be honest. I used to talk about the extra weight of safety features all the time...and I was wrong.
In terms of crash standards, Europe is generally much more stringent, their tests are more realistic, and their standards higher. Especially compared to NHTSA (when was the last time you hit a completely flat surface perfecly head on...but I digress). That's not the argument, though. The argument is weight.
So, here goes:
Your average compact car selling for 19-22K (let's take the Honda Civic or Mazda3, as that's what I'm most recently familiar with). Not including stuff that's pretty standard, like A/C:
Leather seats...power leather seats in some cases. Ever picked up a power leather seat?
Navigation - this includes the head unit, various modules for the satellite, etc. Much heavier than your Garmin.
Premium sound system w/ amps/8-10 speakers, etc.
Heated seats (little weight, but nice to have)
Power steering. Lots of components, and even the electric systems add weight.
Soft-touch material in the dash, door panels, etc. (heavy).
Large-ish alloy wheels (gotta have 18s or people won't buy)
Lots and lots of sound deadening - firewall, floor, wheel wells, etc.
Sunroof (gotta have a sunroof)
Quiet exhaust (find me an OE exhaust that weights less than 60 lbs. On many cars they're over 100).
And that's on a basic, appliance car! All that extra stuff adds up, particularly sound deadening/insulation materials used to make the car feel solid. Manufacturers do sound tests to ensure the door feels sturdy when you close it.
Side note - on luxury cars it's even more significant, as you'd imagine. I remember seeing the wiring harness for a Phaeton (similar to what any given high-end sedan offers) laid out on a table once. All 240 lbs. of it. All wiring. That's a lot of weight.