2004 Toyota Yaris low mpg?

nimrod86

I got a Yaris just over a year ago, and have noticed that my MPG is far lower than what I've read it should be around.

I get around 36MPG according to the trip computer, and my fuel logging app agrees with this. My daily commute consists of motorway driving with a small bit of traffic on the approach. I also don't be flying around like an eejit! I always try drive as smoothly and economically as possible!

Can anyone think of any reasons its low? I check things like tyre pressure regularly so its not that they're low.

Atlantic Dawn

I'd imagine with motorway driving you should be getting late 40's. When was it last serviced?

Sam Kade

I got 55mpg on the motorway with a 00 yaris, stayed around the hundred though.

hoodie6029

I had a 2000 1.0 and I'd only get about that for motorway driving at 120kph. If I kept around 100 I'd get around what Sam Kade got. It really guzzles fuel above 100.

ironclaw

Go above 100km/h and the Yaris MPG will plummet. It is not a motorway car, if you are doing motorway miles it will cost you more than a larger engine car. Fantastic cars but not for the motorways I had a few older Yaris's and from a few years ago I posted this:

As a rough guide, I do 70km every day, 5 days a week and then a small amount of mileage on the weekend. Mostly motorway at circa 100km/h. A 1.0L Yaris costs me anywhere between €55 and €65 per week in fuel (About ~35 to 40 liters) depending on if I brim the tank or not.

The newer Yaris (2006) with a 1.0L will give me about ~500km from a tank of about 35 to 40L of fuel. Works about about 14.3km/L or 7l/100km or 40 UK MPG.

Your figures sound about right. I'd ensure you have a clean air filter, changed spark plugs / fuel filters as required and some line cleaner / dipetane every once in awhile. Should help improve the figures.

nimrod86

Atlantic Dawn wrote:

I'd imagine with motorway driving you should be getting late 40's. When was it last serviced?

Last serviced by myself around September. I did an oil change, oil filter and did the clutch too while I was at it. The car was previously owned by a convent so the clutch was fairly worn, but the car only had 33,000miles on it when I got it in December 2014. It has 46800 as of today!

nimrod86

Hmm... That's what I was kinda thinking... Its been on my mind to change to a 2005/2006 corolla 1.4 diesel because of the mileage I'm doing! The parents disapprove though as "it's a lovely little car"! But I'm finding the petrol costs horrendous! Since January second I've put E164 into it!

hoodie6029

Leave a little earlier and 100kph on the motorway or change to diesel. I'd just leave earlier myself...
Some Redex or dipetane, as already stated might help a bit. They'll bit a bit of pep back into the engine at least.
Not related to fuel economy but change the pollen filter if you haven't already. They tend to be manky. Will make the cabin a bit of a nicer place to be.

kyote00

Nuns are demons for the burnouts...:D

nimrod86 wrote: »

..... The car was previously owned by a convent so the clutch was fairly worn, .....

Jesus.

nimrod86 wrote: »

I'm finding the petrol costs horrendous!

Its some craic when a 1l Yaris is a gas guzzler!

bmwguy

Jesus. wrote: »

Its some craic when a 1l Yaris is a gas guzzler!

Ah they aren't fuel efficient on long distance motorway speed runs they just weren't built for it. The girlfriend has a yaris and I'll tell you all my observations. I see similar mpg to OP for that type of driving. I had a journey to do yesterday Dublin to North wexford with a 5 mile approach to m50 and a 10 mile drive after motorway (obviously this was doubled for the return) so it was a motorway journey plus 30 miles town and back roads in my bmw 525i and the trip computer was showing 37 mpg (probably slightly less in reality but it tends to be close using my own calculations) so it was using the same amount of fuel as the yaris for similar journey. Mostly sitting at 120 kmph. Plus the extra refinement and comfort. Car would have been driven from cold twice too. However, around town the yaris would be even higher or at least equivalent to its motorway mpg whereas the bmw will drop to 23/24 mpg. Yaris is a good little car and I do my short runs in it, the little car definitely feels just as fast as the bmw under say 30 kmph which town speeds would be but for long spins there is no doubt which we are going in and the cost is about the same.

Sam Kade

bmwguy wrote: »

Ah they aren't fuel efficient on long distance motorway speed runs they just weren't built for it. The girlfriend has a yaris and I'll tell you all my observations. I see similar mpg to OP for that type of driving. I had a journey to do yesterday Dublin to North wexford with a 5 mile approach to m50 and a 10 mile drive after motorway (obviously this was doubled for the return) so it was a motorway journey plus 30 miles town and back roads in my bmw 525i and the trip computer was showing 37 mpg (probably slightly less in reality but it tends to be close using my own calculations) so it was using the same amount of fuel as the yaris for similar journey. Mostly sitting at 120 kmph. Plus the extra refinement and comfort. Car would have been driven from cold twice too. However, around town the yaris would be even higher or at least equivalent to its motorway mpg whereas the bmw will drop to 23/24 mpg. Yaris is a good little car and I do my short runs in it, the little car definitely feels just as fast as the bmw under say 30 kmph which town speeds would be but for long spins there is no doubt which we are going in and the cost is about the same.

I've a bigger car as well and the Yaris is like driving a tin can compared to it.

bmwguy

Sam Kade wrote: »

I've a bigger car as well and the Yaris is like driving a tin can compared to it.

My car is an 04 hers is an 06 some difference for motorway driving in refinement and comfort. Although one was 50 grand plus when new the other one was less than 20 so it's understandable. I do like the yaris though for certain things. Back to the OPs point and someone has suggested this already drop it back to 100 kmph or 110 kmph and see if it improves things. I would be doing those speeds and no more in a 1.0 litre car on motorway anyway, sit in the left lane and relax you don't have to do 120 just because it's motorway (m50 is 100 limit).