Ways to improve gas mileage / emissions?

I found with my 2.5 I would get 32/33mpg on my commute to work but I had a custom stainless backbox fitted and my mpg went up to 36/37 for the same commute......sounds lovely too! :D
 
Davz said:
I found with my 2.5 I would get 32/33mpg on my commute to work but I had a custom stainless backbox fitted and my mpg went up to 36/37 for the same commute......sounds lovely too! :D

Very interesting! Was that backbox custom just for you or was it an aftermarket piece? I'll definitely look into this. Thanks!
 
Chris_D said:
Now now ladies.
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LOL!
But seriously, I'm literally only asking questions about my car and some folks use that as a jumping off point to change the subject to issues that have no place here.
 
Most of the membership of this forum is from the UK, I am guessing, and the ethos of car ownership seems to be a little different here to in the States (particularly Cal). No one buys a sports car for economy or emissions here; they used to buy diesel, now they buy hybrid/electric, which is why your question hasn’t had a serious reception.

If you really want to maximise economy/emissions from your Z4 drive it more carefully, make sure the fuelly bits are in tip top condition (VANos, DISA, ICV, sparks, filter), don’t run the aircon, use quality fuel, consider a more fuel efficient map, change the tyres as you say.
 
Zedebee said:
Most of the membership of this forum is from the UK, I am guessing, and the ethos of car ownership seems to be a little different here to in the States (particularly Cal). No one buys a sports car for economy or emissions here; they used to buy diesel, now they buy hybrid/electric, which is why your question hasn’t had a serious reception.

If you really want to maximise economy/emissions from your Z4 drive it more carefully, make sure the fuelly bits are in tip top condition (VANos, DISA, ICV, sparks, filter), don’t run the aircon, use quality fuel, consider a more fuel efficient map, change the tyres as you say.

Thanks for the recap. I got some excellent suggestions on things I wouldn't have considered before. So, goal accomplished.
 
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