IS-350 bad fuel consumption
Thread Starter
Driver School Candidate
Joined: Jun 2021
Posts: 2
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From: RAK
IS-350 bad fuel consumption
Hey guys,
i have a 09 IS350,
it has ridiculous fuel consumption
i dont knw if it's normal but for 23 Litres its giving me 100 Kms (62 miles) if driven at low rpm, or 70-80 Kms per 23 Ltrs on rough driving.
it doesn't seem normal to me,
a workshop told me it was bcoz i of catalysers, i changed both the catalysers (bank1 & bank 2) n it didn't make 1% difference,
no rough idle so plugs n coils look good to me, any help would be really appreciated
thanks in advance
the car is completely stock, no aftermarket exhaust system, stock intake.
i have a 09 IS350,
it has ridiculous fuel consumption
i dont knw if it's normal but for 23 Litres its giving me 100 Kms (62 miles) if driven at low rpm, or 70-80 Kms per 23 Ltrs on rough driving.
it doesn't seem normal to me,
a workshop told me it was bcoz i of catalysers, i changed both the catalysers (bank1 & bank 2) n it didn't make 1% difference,
no rough idle so plugs n coils look good to me, any help would be really appreciated
thanks in advance
the car is completely stock, no aftermarket exhaust system, stock intake.
Last edited by billi; Jun 1, 2021 at 01:08 AM.
Hey guys,
i have a 09 IS350,
it has ridiculous fuel consumption
i dont knw if it's normal but for 23 Litres its giving me 100 Kms (62 miles) if driven at low rpm, or 70-80 Kms per 23 Ltrs on rough driving.
it doesn't seem normal to me,
a workshop told me it was bcoz i of catalysers, i changed both the catalysers (bank1 & bank 2) n it didn't make 1% difference,
no rough idle so plugs n coils look good to me, any help would be really appreciated
thanks in advance
the car is completely stock, no aftermarket exhaust system, stock intake.
i have a 09 IS350,
it has ridiculous fuel consumption
i dont knw if it's normal but for 23 Litres its giving me 100 Kms (62 miles) if driven at low rpm, or 70-80 Kms per 23 Ltrs on rough driving.
it doesn't seem normal to me,
a workshop told me it was bcoz i of catalysers, i changed both the catalysers (bank1 & bank 2) n it didn't make 1% difference,
no rough idle so plugs n coils look good to me, any help would be really appreciated
thanks in advance
the car is completely stock, no aftermarket exhaust system, stock intake.
When done, run some fuel system cleaner through it.
What grade of petrol is being used, low octane fuel will impair fuel economy?. Buy the best fuel available.
PS my 350 gets 21 to 23 MPG doing a mix of city/highway.
Range of 300 to 325 miles (482 km to 523k)
14 gallons @ fill up (53 liters)
312.5 mi / 14 gal = 22.3 mpg
502.5 km / 53 l = 9.48
Range of 300 to 325 miles (482 km to 523k)
14 gallons @ fill up (53 liters)
312.5 mi / 14 gal = 22.3 mpg
502.5 km / 53 l = 9.48
Thread Starter
Driver School Candidate
Joined: Jun 2021
Posts: 2
Likes: 0
From: RAK
Start by cleaning the MAF sensor with MAF sensor cleaner and replace the air filter. You should also clean the charcoal mesh in the air filter box... https://www.clublexus.com/forums/is-...-interval.html
When done, run some fuel system cleaner through it.
What grade of petrol is being used, low octane fuel will impair fuel economy?. Buy the best fuel available.
When done, run some fuel system cleaner through it.
What grade of petrol is being used, low octane fuel will impair fuel economy?. Buy the best fuel available.
Hey,
cleaned the MAF sensor
also threw a bottle of injector cleaner in the tank today,
will update you if there is any difference,
for now it's showing 8.2 MPG,
the fuel I'm running is 95 octane
Lexus Champion
Joined: Oct 2019
Posts: 19,714
Likes: 3,768
From: California
The Lexus IS350 Reliability Rating is 4.0 out of 5.0, which positions it ninth out of 31 for extravagance moderate size vehicles. The normal yearly fix cost is $543 which implies it has below the norm proprietorship costs. Hope to make somewhat more excursions to the shop with an IS350, yet for minor issues.
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