Toyota Yaris (1999 - 2005) - 2000 1.3 SR Increase in fuel consumption | Technical matters | Back Room Forum

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Tue 14 Oct 2008 13:00

2000 1.3 SR Increase in fuel consumption - dxp55

SWMBO bought a three year old 1.3 SR Yaris in 2003 with about 20k miles on clock - since then she has clocked up another 58k and car has performed faultlessly - in fact it passed it's MOT again without anything being done to it last Friday.

Over the last few months I have noticed the computer fuel consumption figures have dropped - in all the years it has constantly read around 44-48 mpg and I had no trouble getting it up to 50 mpg - however it's now reading 39-41 - it runs well and starts first time - Now when starting up from cold I can smell slight whiff of petrol and after first 200yrds to first tee junction when lifting foot off throttle the engine speed doesn't drop instantly like it used to -- I have given it a few Italian tune ups (she drives steady) cleaned plugs and changed air filter - There is no temp gauge only a blue symbol of thermometer and that goes out after about 1 1/2 miles - heater gets hot quickly - so before I ask my local Mobile Auto Tune specialist to come and plug his kit on has anyone any advise as what I could look for - I feel it has to be something simple and connected to cold startup as when engine is hot and I reset computer to zero the fuel consumption figure is back up to 44-48 but after startup next morning it drops back to low 40's and if she does a few cold starts during day it gets even lower -- Doing a tank full to tank full consumption work out it's coming out at 44-45.

Thanks

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