# fuel efficiency? **URL:** \ **Category:** SON240sx Automotive\ **Created:** [December 31, 2007, 2:15am UTC](https://forums.speedlife.net/t/fuel-efficiency/112123 "2007-12-31T02:15:15Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![s13\_coupe](https://avatars.discourse-cdn.com/v4/letter/s/898d66/32.png) [@s13\_coupe](https://forums.speedlife.net/u/s13_coupe)\ **Post date:** [December 31, 2007, 2:15am UTC](https://forums.speedlife.net/t/fuel-efficiency/112123/1 "2007-12-31T02:15:15Z")
hey guys, for some reason im gettin really low fuel mileage, like 350 - 400km per _tank_ i’d like some imput on what u guys think/know is causing my big loss in fuel economy. thanks ---
**Author:** ![Pants](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/pants/32/5590_2.png) [@Pants](https://forums.speedlife.net/u/Pants)\ **Post date:** [December 31, 2007, 6:44am UTC](https://forums.speedlife.net/t/fuel-efficiency/112123/2 "2007-12-31T06:44:48Z")
cold weather? ---
**Author:** ![kollo](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/kollo/32/5661_2.png) [@kollo](https://forums.speedlife.net/u/kollo)\ **Post date:** [December 31, 2007, 7:04am UTC](https://forums.speedlife.net/t/fuel-efficiency/112123/3 "2007-12-31T07:04:35Z")
i only get 120pertank in city driving and 200-400highway cold weather really bring that down alot becuase your cars need to burn more fuel to mantian a constant heat i think ---
**Author:** ![roast](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/roast/32/5498_2.png) [@roast](https://forums.speedlife.net/u/roast)\ **Post date:** [December 31, 2007, 9:58am UTC](https://forums.speedlife.net/t/fuel-efficiency/112123/4 "2007-12-31T09:58:48Z")
> [@this is uber pimp](https://forums.speedlife.net/t/this-is-uber-pimp/15387/8): > > i only get 120pertank in city driving and 200-400highway cold weather really bring that down alot becuase your cars need to burn more fuel to _mantian a constant heat_ i think That doesn’t sound right, I’d google it and provide some proof before backing up that opinion. ---
**Author:** ![240coupe](https://avatars.discourse-cdn.com/v4/letter/2/e495f1/32.png) [@240coupe](https://forums.speedlife.net/u/240coupe)\ **Post date:** [December 31, 2007, 10:28am UTC](https://forums.speedlife.net/t/fuel-efficiency/112123/5 "2007-12-31T10:28:32Z")
omfg ^ i think thats impossible , sumthing must be wrong with your car are you saying you get 120 kms for 60$ of gas ---
**Author:** ![Polar\_s13](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/polar_s13/32/5572_2.png) [@Polar\_s13](https://forums.speedlife.net/u/Polar_s13)\ **Post date:** [December 31, 2007, 11:02am UTC](https://forums.speedlife.net/t/fuel-efficiency/112123/6 "2007-12-31T11:02:05Z")
I get around 550km-600km a tank on my SR on 91 octane, unless your constantly reving over 6000rpm when your stopped and when your going theres no way your getting 120km a tank you must be running rich. ---
**Author:** ![rex\_thugs](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/rex_thugs/32/5598_2.png) [@rex\_thugs](https://forums.speedlife.net/u/rex_thugs)\ **Post date:** [January 3, 2008, 10:45pm UTC](https://forums.speedlife.net/t/fuel-efficiency/112123/7 "2008-01-03T22:45:43Z")
yea i have a sr running at like 12psi and i get like 400+ easily a full tank, like 20 litres take me about 150-200km and i have atmo’d bov so car runs rich nshit. ---
**Author:** ![hipsi](https://avatars.discourse-cdn.com/v4/letter/h/df705f/32.png) [@hipsi](https://forums.speedlife.net/u/hipsi)\ **Post date:** [February 18, 2008, 12:37pm UTC](https://forums.speedlife.net/t/fuel-efficiency/112123/8 "2008-02-18T12:37:03Z")
Hows your tire pressure? fuel filter? oil grade? oil quality? fuel grade? etc… ---
**Author:** ![kollo](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/kollo/32/5661_2.png) [@kollo](https://forums.speedlife.net/u/kollo)\ **Post date:** [February 18, 2008, 12:40pm UTC](https://forums.speedlife.net/t/fuel-efficiency/112123/9 "2008-02-18T12:40:11Z")
i run my car and get 275 city or around 500highway ---
**Author:** ![jammin1911](https://avatars.discourse-cdn.com/v4/letter/j/a9a28c/32.png) [@jammin1911](https://forums.speedlife.net/u/jammin1911)\ **Post date:** [February 18, 2008, 1:36pm UTC](https://forums.speedlife.net/t/fuel-efficiency/112123/10 "2008-02-18T13:36:27Z")
wow why does everyone except thomas get such shitty gas mileage? haha my sohc is literally about to explode and its a huge pile of garbage and i get 450km per tank with about 33% city 66% highway. i do over 500km per tank if i drive all highway my old dohc ka got 600km per tank driving 33% city 66% highway, 650+ with all highway. mike (spd-dmn)'s KA has been known to get him over 800km tank all highway with an extremely diciplined right foot and over 700km on a regular basis. ---
**Author:** ![Hurricane](https://avatars.discourse-cdn.com/v4/letter/h/e9bcb4/32.png) [@Hurricane](https://forums.speedlife.net/u/Hurricane)\ **Post date:** [February 18, 2008, 2:31pm UTC](https://forums.speedlife.net/t/fuel-efficiency/112123/11 "2008-02-18T14:31:00Z")
A properly running KA should get 400-450 MIN city driving, and about 500-550 highway from my experiance. If you are getting bad milage make sure you motor is tuned up. (Take it to a shop if your not sure what that means) Check your tire presure Don’t rev out to 5k before you shift Check your O2 sensor Make sure your cat isn’t old and plugged. Thats all I can think of off the top of my head. ---
**Author:** ![Pants](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/pants/32/5590_2.png) [@Pants](https://forums.speedlife.net/u/Pants)\ **Post date:** [February 18, 2008, 3:26pm UTC](https://forums.speedlife.net/t/fuel-efficiency/112123/12 "2008-02-18T15:26:18Z")
once spring comes ill let you know how my car is ---
**Author:** ![Specialblend](https://avatars.discourse-cdn.com/v4/letter/s/2bfe46/32.png) [@Specialblend](https://forums.speedlife.net/u/Specialblend)\ **Post date:** [February 18, 2008, 3:56pm UTC](https://forums.speedlife.net/t/fuel-efficiency/112123/13 "2008-02-18T15:56:01Z")
ive had mine do 640 km to a half tank all highway cruise on. they do tend to get a lil use in the winter but if your getting 120 you must have a gas leak bro. ---
**Author:** ![PureEuroM3](https://avatars.discourse-cdn.com/v4/letter/p/3bc359/32.png) [@PureEuroM3](https://forums.speedlife.net/u/PureEuroM3)\ **Post date:** [February 18, 2008, 4:04pm UTC](https://forums.speedlife.net/t/fuel-efficiency/112123/14 "2008-02-18T16:04:25Z")
$50 of 91 octane gets me 400-500 km of driving. This is a mix of city, highway and everything. ---
**Author:** ![Hurricane](https://avatars.discourse-cdn.com/v4/letter/h/e9bcb4/32.png) [@Hurricane](https://forums.speedlife.net/u/Hurricane)\ **Post date:** [February 18, 2008, 4:47pm UTC](https://forums.speedlife.net/t/fuel-efficiency/112123/15 "2008-02-18T16:47:59Z")
640 to 1/2 a tank… so 1280 to a full tank? You have one of those rare early S13 hybrid cars? Or does yours just run on happy thoughts and good will? > [@FS: 1995 S10 SS](https://forums.speedlife.net/t/fs-1995-s10-ss/15598/28): > > ive had mine do 640 km to a half tank all highway cruise on. they do tend to get a lil use in the winter but if your getting 120 you must have a gas leak bro. ---
**Author:** ![sidewayz240](https://avatars.discourse-cdn.com/v4/letter/s/e99b99/32.png) [@sidewayz240](https://forums.speedlife.net/u/sidewayz240)\ **Post date:** [February 18, 2008, 4:57pm UTC](https://forums.speedlife.net/t/fuel-efficiency/112123/16 "2008-02-18T16:57:53Z")
A tank of 91 octane gets me around the 300km mark with mostly city driving, I know its running rich, just cant determine why. It has newer plugs, wires, O2 sensor, 3" cat, shift at 3k almost all the time, Ect sensor seems to be functioning fine. Those are all thing id check/replace OP. If anyone has any other ideas im all ears. ---
**Author:** ![hipsi](https://avatars.discourse-cdn.com/v4/letter/h/df705f/32.png) [@hipsi](https://forums.speedlife.net/u/hipsi)\ **Post date:** [February 18, 2008, 5:04pm UTC](https://forums.speedlife.net/t/fuel-efficiency/112123/17 "2008-02-18T17:04:26Z")
What weight oil does eveyone run? ---
**Author:** ![spooolin](https://avatars.discourse-cdn.com/v4/letter/s/48db29/32.png) [@spooolin](https://forums.speedlife.net/u/spooolin)\ **Post date:** [February 18, 2008, 7:22pm UTC](https://forums.speedlife.net/t/fuel-efficiency/112123/18 "2008-02-18T19:22:01Z")
HMM anyone know the fuel milage of a RB25det? Ive never looked into it really lol… ---
**Author:** ![fastback240](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fastback240/32/5591_2.png) [@fastback240](https://forums.speedlife.net/u/fastback240)\ **Post date:** [February 18, 2008, 7:47pm UTC](https://forums.speedlife.net/t/fuel-efficiency/112123/19 "2008-02-18T19:47:42Z")
dude i get 600k highway easy on my sohc and its running like assssss ---
**Author:** ![AhmadG](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ahmadg/32/5577_2.png) [@AhmadG](https://forums.speedlife.net/u/AhmadG)\ **Post date:** [February 18, 2008, 8:08pm UTC](https://forums.speedlife.net/t/fuel-efficiency/112123/20 "2008-02-18T20:08:08Z")
I have a new cat (1 month old), new O2 sensor (1 month old) and a brand new air filter. I just replaced the plugs with NGK Platinums and installed premium Bosch wires as well. I’m getting about 300km with 70% city and 30% highway. I believe the car is running rich because after I beat on it a bit, it starts to smell like rotten eggs, possibly indicating that the unburned fuel is going to the catalytic convertor. I am pretty frustrated and don’t know what to do next. I bought a PCV valve, distributor cap & rotor, thermostat, fuel filter and water temperature sender…gonna get them installed by a mechanic very soon. What else could cause this fuel efficiency problem? I’ll try giving the MAF and Throttle body a cleaning too once I get the chance. btw I’m running 5w30 on a stock KA24DE with an auto tranny and I use 91 octane most of the time from Sunoco…also I use winter injector cleaner with every fill up, bought from Crappy Tire. [Next page](https://forums.speedlife.net/t/fuel-efficiency/112123.md?page=2)