How to improve my fuel economy?

[Murtaza_murti]

I have a '06 Belta with the 1KR-FE 1.0L engine, the fuel average is suppose to be around 20-22 KM/L. But when I fill my tank I get around 300-350Kms on a full tank. How can I improve the overall fuel economy? I asked a guy at a workshop he said to get your Throttle body and MAF sensor cleaned. I Need some suggestion's on whether to getting my Throttle body and MAF sensor cleaned or not and other suggestion's on getting a better overall fuel economy.

[Murtaza_murti]

Bump.

[mryaris]

It could be a number of things really......bad gas, poor roads, engine needing a tune-up, lead foot, dragging brakes, plugged catalytic converter (if equipped), etc.

You are getting about half the mileage you should be getting, so I'm guessing it isn't something as simple as cleaning your throttle body. There is probably something more seriously wrong (although cleaning the TB & MAF won't hurt).

How many miles? Condition of the car? Don't laugh (I have no idea), but what are the roads like in Pakistan? I'm imagining that they suck, but I've never been there. What kind of traffic do you drive in? If the roads are always crowded and you're limping along in stop & go traffic your mileage will never be very good.

Again, it could be one of a number of factors or many combined factors as to why your mileage is low. It's going to be hard to pinpoint over the computer.

[Flipper_1938]

!

[kenora]

The absolute worst mileage I can manage is in the winter (-30c) with shitty winter gas (plus 10% ethanol) and lots of snow to slog through, holds the car back like sand, add the inevitable too much idling (to keep from freezing) combined with stop and go traffic and short commutes can get me down around 350 -400 km per tank, that is brutal. :(
I have the bigger engine that should get crappier mileage though (4 cylinder 1.5 liter) so I think unless you are towing a trailer that something is wrong.

[SpaceShot]

Before or while getting the MAF cleaned I would certainly start with changing the air filter. If you can not get a new one, at least bang the loose dust out of it.

Then look at your tires. Lo pressure in the tires will also hurt your fuel economy a noticeable amount. If the tire pressure is good, then look for a dragging brake caliper or badly worn suspension.

[Murtaza_murti]

It could be a number of things really......bad gas, poor roads, engine needing a tune-up, lead foot, dragging brakes, plugged catalytic converter (if equipped), etc.

You are getting about half the mileage you should be getting, so I'm guessing it isn't something as simple as cleaning your throttle body. There is probably something more seriously wrong (although cleaning the TB & MAF won't hurt).

How many miles? Condition of the car? Don't laugh (I have no idea), but what are the roads like in Pakistan? I'm imagining that they suck, but I've never been there. What kind of traffic do you drive in? If the roads are always crowded and you're limping along in stop & go traffic your mileage will never be very good.

Again, it could be one of a number of factors or many combined factors as to why your mileage is low. It's going to be hard to pinpoint over the computer.


The car has completed 31,000Km's. The condition is very good, I take alot of care of my car's. I haven't repaired anything so far or had any engine trouble except the bad fuel average. The road's aren't that crappy I mean they're are some roads that have bump's, uneven patched area's, but not huge potholes etc.

I don't take it out the Belta much often, it's usually parked most of the time. The traffic is pretty rough here, stop's & go's are common.

[Murtaza_murti]

Also, what is the elevation of where you are? Higher elevation hurts gas mileage also.

The elevation of the city is 8 Meter's (26 feet), but the area's where I drive mostly have alot of uphill's and downhill's.

[Murtaza_murti]

The absolute worst mileage I can manage is in the winter (-30c) with shitty winter gas (plus 10% ethanol) and lots of snow to slog through, holds the car back like sand, add the inevitable too much idling (to keep from freezing) combined with stop and go traffic and short commutes can get me down around 350 -400 km per tank, that is brutal. :(
I have the bigger engine that should get crappier mileage though (4 cylinder 1.5 liter) so I think unless you are towing a trailer that something is wrong.

What mileage do you get normally? Excluding the winter season. The 1.0L 1KR-FE engine is suppose to give around 750-800 KM's in a full tank. I can't seem to find the problem with mine's.

[Murtaza_murti]

Before or while getting the MAF cleaned I would certainly start with changing the air filter. If you can not get a new one, at least bang the loose dust out of it.

Then look at your tires. Lo pressure in the tires will also hurt your fuel economy a noticeable amount. If the tire pressure is good, then look for a dragging brake caliper or badly worn suspension.

I've changed the air filter about a month ago, since then I've only droven the car about 1000Km's. I got my tire rotated about two months ago, the front ones are kinda worn-out I moved those to the back and the ones in the back to the front.

I've recently noticed that my brake's are feeling softer than before, I need to get my brake pad's changed and my brake shoe's cleaned.

[BluYrs]

The numbers you have given are unrealistic. 20 km/litre (5 litres/100kms) is well less than the official figures. If my memory serves me right, the official consumption figures for highway/city were 5,5 and 6,4 litres/100kms (1,0 HB).

You'll find that you usually fill up ca 37 litres at a time, because the fuel indicator actually shows empty (0kms range) when you've used up about 35 litres of fuel. That amount (37 litres) should be good for 500-600 kms of driving. The best I've ever done is 5,4 litres/100 kms and I've never ever had double digits for cunsumption (ie >10 litres/100 kms), even during weeks of blizzards and snow below -20C.

[Murtaza_murti]

Bump.

[Murtaza_murti]

Bump.

[Murtaza_murti]

Bumping, again.

[Murtaza_murti]

Anyone? Please help.

[why?]

dude go to a mechanic. If what you are saying is true something is prolly very wrong with your car. there is no way we could diagnose it over the internet.

[yaris2010RS]

put tape over all the cracks and gaps in body :)

[Yar Is Word]

Hello!

Have you seen either of these forums?:

http://www.pakwheels.com/forums/

http://www.offroadpakistan.com/forums/viewtopic.php?id=213
Closer to home, maybe someone there can recommend a good mechanic.

Here are Pakistani auto related classifieds:
http://www.olx.com.pk/q/motors/c-198

Hope you get your issue resolved soon without paying too much.

[Murtaza_murti]

Changed the following:

- Spark Plug's.
- Air Filter.
- Engine Oil.
- Engine Oil Filter.
- Cleaned the Throttle Body.

After all of that, it is still giving me 48 Kms per block.

[Murtaza_murti]

Anyone here to help?

[SilToYaris]

Hi all! First look at the problems. When i first get my Yaris it was very econimical for about first 20 000Km "stock". Then i started to put some HP Enhencer; Cold air, Injectors, Performance muffler,Changes the KS emplacement. With that in mind the ECU recalculate all the fuel maps and then put them in "Cell" Driver's habits. It almost sure that the car MPG will drop significanly. The best thing you can do is that you clean everything MAF heating resistor the IAT Throttle plate and do an ECU reset. Drive it very normally and it should be better in your mileage rates. ;) It works for me....

[lomo13]

hi.

500 kms per full tank is a bit unrealistic, especially in a hot country, and probably questionable quality of fuel.
plus the 1000 cc engine's probably underpowered, so you end up not getting enough power, and the engine's overworked (and may consume more petrol to get the engine revving and starting).

change your driving style, and try to keep the revs below 2,500 rpm. i get 450 km per tank, est 17km/l in real world driving conditions out of my 1300 m/t yaris sedan.

you mentioned that there are a lot of uphill roads in your country, inclined roads make the engine work harder and consume less more petrol.

also try to take out the unnecessary junk inside the vehicle. leave just the spare tire in the boot, if necessary.

try to drive sensibly. sometimes the best modification is done behind the wheel.