I just bought a used 2004 350z roadster, and I'm wondering what is the most cost effective way to improve the mileage? I've heard that adding a cool air intake and a new exhaust system can boost mileage to around 20-25 mpg city. Any recommendations on what to purchase would be greatly appreciated. I'm not much of a gear head and don't have much knowledge on the subject. I love the car, and the thought of improving mileage and performance is something I would consider investing into.

 

I say regular maintenance will be the best bet.
Oil change, spark plugs, new air filter, tire pressure.

 

Best way to improve mileage is shifting early and having a light foot, smaller wheels and tires help too.

 

intake, exhaust, high compression pistons...will pay you back in 25 years of driving

 

I average 27MPG with intake Plenum spacer and exhaust.

Allot will depend on your driving habits though too...

 

roll around town like this, you'll increase MPG dramatically

 

Turbonator.

Also adds horsepower, too. My friend's girlfriend's sister's husband's second-cousin used it in his Mustang, and damn! He smoked a ZR-1!


No foolin'.

 

on turbonator I forgot to mention my fiends honda runs 12's from just that nothing else.... Its true

 

get a prius

 

Get the driver mod.

 

Ya seriously. I LOL when people are so worried about mileage. If you do the math (I know others have outlined this previously) it is ridiculous how little you save in the scheme of things.

<----Likes to drive his Z. *** mileage.

 

breathing mods hardly altar the mpg, sometimes they make it worse too, but they will all advertise they make it better.

your best bet is to drive conservatively , shift early, light on the gas.. but you bought a Z, why are you concerned with mileage? : )

 

Make sure your tires are properly inflated.

 

Just like many people stated - driving habits have the biggest impact. Light foot helps most.

Oh - I've read that keeping the top UP at highway speeds will help too. But for gods sake - you should be shot and forced to drive a 1974 Ford Pinto if you follow that option.

I believe I picked up about 1mpg when I installed my Nismo exhaust - love the sound, that was just a bonus. Not worth it on mpg alone.

Good Luck

 

As gas prices started to creep up, I was expecting this type of thread to rear its head.

 

If you do a lot of off-highway driving in traffic (like me) and don't always want to push hard (on occasion, I don't - like when it's raining) and enjoy shifting (like me), it's kind of fun to go through all the gears all the time really fast.

Shift speed recommendations for better mileage are lower than you'd probably expect:

 

^ LOL I think I've only shifted that low a few times in the 3+ years I've owned the car. Of course that's why I get 20MPG as well.

 

Post 2 and 3 are your best answers....especially for a guy just driving the Z too and from.........a non-enthusiast....so to speak like you say....

now, if you grow to be an enthusiast some of the after market items suggested would be also be slightly* beneficial since you would want it anyways.......but not solely to improve gas mileage..

oh and welcome to the forum..

-J

 

http://cgi.ebay.com/Fuel-Saver-Impro...3%3A1|294%3A50

try this and write a review.

 

I get up to 30 driving on the interstate. My old 4-banger Saturn didn't even get that kind of mileage. I think the Z has pretty remarkable MPG when you drive it easy. Shift up at 2500, ease on the acceleration, keep your tires at recommended PSI, keep your air filter clean.