N/a Fuel Economy Thread

[iseekool]

Haven't had a chance to change the O2 sensor yet. But cleaned the TB, PCV, AFM and air box temp sensor. Idles smoother and seems to have more urge when I reach the 3000rpm mark.

The other factor that maybe contributing to bad fuel economy was my wheel alignment was way off. Had the wheels aligned this morning. Front left wheel was toed in by 3mm! It was actually visibly noticeable - I just never cared to look.

[Wagzy]

Stock R34 N/A 2001 on premium* fuel got over 400km's on highway driving with still just under a quarter of a tank left. Haven't really done a full run but will eventually.

[niZmO_Man]

Use L/100km not this "to a tank" bullshit.

[Hertz Donut]

Stock 2004 PNM35 Stagea (VQ35DE, 4WD) - 9.68l/100km, 600km of the tank was on the open road, zero effs given about economy, I'd rather enjoy the trip.

[350_GT]

10.5- 12L per 100k on average 75L tank

07 VQ35HR

Edited December 11, 2014 by 350_GT

[EliseViv]

9.1 litres per 100 km for mount Isa to Townsville trip. Sat on 100 - 110 the whole way. R32 gtst (manual) bog standard. Uses about 12 litres per hundred round town.

[mad082]

Hi Fellas,

I'm going slightly off topic. But the car is still an N/A and a Nissan

Mrs. and I recently bought an N15 Pulsar 1.6L Auto sedan (granny spec??) as a our runabout/train station/shopping center/park anywhere kind of car. Car is 100% stock and has 170,000km on the clock.

I've been driving it lots lately (to work and back ~100km round trip) to get a proper grasp of the fuel economy as I've suspected the car is guzzling fuel, as we all know short trips are a bad gauge of measuring fuel economy - mainly used to go to the local train station/shops.

My route is mixed urban and freeway driving. I'm not too happy with the fuel consumption. I'm getting around 9L/100km when intentionally babying it and 10L/100km when driving "normal" (not thrashing it).

I thought this kind of car should be using around 7 to 8L/100km - being realistic, I don't believe the figures posted by Redbook (quoted combined 6.2L/100).

I've made sure tires are inflated to the correct pressure and did a an oil (Nulon Semi-Syn 10w40) and filter change. I'm currently running the car on Shell V Power every fill in the hope it will clean the engine.

Just wondering is anybody out there is having the same consumption with the same car or a car with a similar sized engine, 1.6L Auto.

For comparison purposes my Lexus IS 2.0L 6 speed manual gets 9L/100 and my R34 2.5L auto gets 11L/100, for the same route....

I realise this post is a little bit old, but what I am going to say may help others and contains some generic info. those 1.6l engines with an auto bolted to them are slugs. They are fine once they are up and moving, but take a bit to get going (I used to own a n14 version). But they should get reasonable economy as long as you aren't in stop/start economy (even then you should be in the 8 to 10l per 100kms).

I'd definitely be looking at the o2 sensor if you haven't gotten around to it yet. The other thing to check I'd how long it takes to warm up. When I got my n14 off my sister, it would sit on cold on the highway and would only come up to warm going up a hill. It was also sluggish and used more fuel than it should. I changed the thermostat and it made it run better and use less fuel. I can't remember what sort of economy I got though.

On the fuel economy front, my old daily (vt Commodore with close to 300,000kms on it) was getting about 8.7l/100kms (pretty much all highway driving). My new daily (2002 1.5l mirage with over 250,000kms on the clock) gets about 6.3l/100kms with normal highway driving. Got 5.7l out of it when babying it. Would get marginally better economy out of it on a different trip than to and from work, since there's a few hills that require dropping back a gear or 2 (one that's back to 3rd at 80kmh for just over 1km).