Fuel Consumption of Chevrolet Optra

hlg SG

I just got an Optra a couple of months ago. I am getting a fuel consumption of about 9km per litre which is very high for a 1.6 litre car.

Anyone facing this problem with their Optra?

[email protected] SG

sounds wrong. let me check out the specs stated and get back to ya

KhidMasAE86 SG

wah piang!!! too much…that one i think u got it wrong….its almost the same as a stock Evo or any High powered turbo car sia!! check again…my uncle’s optra abt 13km/l leh….

[email protected] SG

should be 10-15km/l

hlg SG

Thank you for all your advises. I also think it is very wrong. Gone back to the distributor and they advised me that I have to run in the car up to 10,000km before the fuel consumption can improve. In fact, I was told by them that 9.5 km/litre is normal for the car, and they said that the specification in their brochures (which stated up to 14 km/lit) is based on some test conditions e.g. no air-cond, 14" tires, one person etc etc.. All kinds of conditions. But I asked them, how can neber tell me about these conditions when I was deciding on the car, in fact, the salesperson re-affirm me the figures on the specs.

I am now at about 7000km, and will be monitoring closely.

[email protected] SG

in fact, in some reviews i’ve read, urban driving conditions gave it an FC of 8.5km/l

swordsman_Lu SG

I also learnt that we should look at fuel consumption spec. with the right perspective. Usually what is claimed is under certain (optimised?) conditions. If you are driving in the cities, ha, you’ve got to pay more for fuel. Worse if your car is heavier, or a petrol-drinker.

[email protected] SG

also have to look at the way u drive it.
i know of someone who keeps his rpms under 3000, all the time, so hes getting a lower FC.

hlg SG

True. Will take all the advises into consideration. Do not think I drive like a F1 driver, and I do not drive in the city too much as I stay and work in live in the west; dun think I encounter too much start-stop driving.

Still 9km/litre is really way too high. Fuel so expensive here, it is really burning a big hole in my pocket Rolling Eyes

[email protected] SG

hmm get your engine checked maybe? could be some manufacturing fault

american idol SG

I am getting 9km/l too and I am 3rd week driving the optra. the mechanic also told me that once Syn Oil chnage it will improve. are you using RON 92 or 98 ?

johncooper SG

Use Shell petrol … Better mileage … serious … me sunny fc is 9.5km/l and i am usually heavy footed, but now with my king kong weighted foot it inceased to 11.2km/l on average … so why not give it a shot … no harm trying Shell rite?

american idol SG

Shell 92 or 98 ?

[email protected] SG

shell?
HOHOHO! never ever use shell.
i have an inside story about it. can't post it here but PM me if u want to know why i say avoid shell.

y720 SG

how to PM ar? Smile

hlg SG

Made some noise with the distributor, and the General Manager met up with me. He said that after 10,000km, they will change to synthetic oil, and FC should improve. He also said maybe can tune the engine to run more lean i.e. more air, less fuel to further improve the FC. He also offered to replace my tyres back to 14" (I am having 15" sports rim which according to him, drinks more fuel).

Since I am not the only one with this high FC, it is probably a manufacturer design issue, and/or they have misrepresented their FC performance specs in their brochures (which claims that the car is capable of 14.something for highway driving, 8.something for city, and average is 11.something).

See if we can do anything about it.

[email protected] SG

well 8 for city driving is about right, and we are in the city aren't we?
anyways, one consideration for running it lean, is that u may actually damage your engine, so do be careful not to tune it too lean.

hlg SG

In the brochure, it says 14km/lit for Urban driving, and 8km/lit for Extra Urban driving (with traffic jams??). Do not really know how they define Urban and Extra Urban. But at the time of my decision to buy the car, the salesperson told me I should be getting 11km/lit.

As for the lean fuel tuning, according to them, if tuned more air and less fuel, the engine will run hotter.

[email protected] SG

and hotter is not good for the engine.

american idol SG

Anybody try grounding for the optra, can teach me how to do it ?