Poor MPG on Lexus IS 250 - Fsport
#1
Rookie
Thread Starter
Poor MPG on Lexus IS 250 - Fsport
Hi guys,
I am writing this thread all the way from Tehran, Iran. I thought I ask about my problem here since its the most active Lexus forum worldwide!
So I just got my 2015 IS 250 - F sport exactly a week ago. and have noticed that my car has severe bad MPG! so I got the car last Saturday with only 7 miles on it and a little more than 1/4 of filled tank. I drove 178 miles this week and already have filled the tanks once and now my gauge is almost where it was when I got the car. (that is almost a tank of fuel for only 170 miles!)
I have only been driving in the city and have spent at least 2 hours of engine just idling in traffic but still. on the trip computer of the car I have 13.84 MPG as average
(in the pic its a different number because my car uses metric system ie KM and Litres instead of Miles and Gallons).
Any idea what the problem could be? is it really like that?
I am writing this thread all the way from Tehran, Iran. I thought I ask about my problem here since its the most active Lexus forum worldwide!
So I just got my 2015 IS 250 - F sport exactly a week ago. and have noticed that my car has severe bad MPG! so I got the car last Saturday with only 7 miles on it and a little more than 1/4 of filled tank. I drove 178 miles this week and already have filled the tanks once and now my gauge is almost where it was when I got the car. (that is almost a tank of fuel for only 170 miles!)
I have only been driving in the city and have spent at least 2 hours of engine just idling in traffic but still. on the trip computer of the car I have 13.84 MPG as average
(in the pic its a different number because my car uses metric system ie KM and Litres instead of Miles and Gallons).
Any idea what the problem could be? is it really like that?
#2
Pole Position
Yes it is like that. You do realize that when the car is idling, the mileage is going to be 0 mpg. I live in Chicago and while there's no idling, there's a lot of stop and go traffic (which results in 14 mpg on my IS350 AWD).
#4
Pole Position
#6
Lead Lap
I agree....City driving, excessive idling, plus a brand new engine will yield poor fuel consumption....
#7
Rookie
Thread Starter
thanks. I was really worried. becuase before that car I had a 2.0 litre suzuki and its consumption was waaay lower than the IS. btw you all mentioned because of the new engine. you mean will it get better after a while the engine gains some mileage? because still the lexus europe sites say that the city consumption is about 10L/100km (23.5MPG) . mine is doing almost half of that :l
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#8
Pole Position
thanks. I was really worried. becuase before that car I had a 2.0 litre suzuki and its consumption was waaay lower than the IS. btw you all mentioned because of the new engine. you mean will it get better after a while the engine gains some mileage? because still the lexus europe sites say that the city consumption is about 10L/100km (23.5MPG) . mine is doing almost half of that :l
#9
Don't bet on much improvement.
My IS350 has been getting between 13 and 14 mpg's on 50-50 highway/city driving since new. It now has 10k miles.
There's a large handful of people who have the same complaint.
Something is wrong, and it's not break-in, driving style or fuel quality, as I've been very cautious with same.
My IS350 has been getting between 13 and 14 mpg's on 50-50 highway/city driving since new. It now has 10k miles.
There's a large handful of people who have the same complaint.
Something is wrong, and it's not break-in, driving style or fuel quality, as I've been very cautious with same.
#10
Driver School Candidate
Join Date: Nov 2014
Location: ON
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is350 Fsport RWD
80% City, 20% highway(some times even less).
I average about 13-13.5L/100km for each tank of gas.
Most of the time i drive in "normal mode", with Sport + mode sprinkled on the side =D (never Eco)
During rush hour, my drive to work (45 mins) my gauge is showing ~15L/100KM
TBH I don't think 13-13.5L/100km average per tank is unreasonable for a V6 300HP car.
I owned a g35, V6 298hp car prior, and it averaged about 14-15L/100km per tank.
If you're looking for a fuel efficient Lexus, you've bought the wrong car.
Should have bought the CT200H, or some form of their hybrid cars.
First week I drove it, I got it down to 9.9L/100km citiy, but that was with Eco mode + Snow mode (no it wasn't snowing yet) + suppeeerrr light on the gas. IT DROVE ME CRAZY! I didn't buy the Lexus to be gas efficient and let a 1999 civic pass me!
Now I say, **** it, at least normal mode, and I'll step on the gas as much as I want. Way more enjoyable drive when you stop caring about the MPG lol.
I say, enjoy your V6, don't worry too much about gas!
80% City, 20% highway(some times even less).
I average about 13-13.5L/100km for each tank of gas.
Most of the time i drive in "normal mode", with Sport + mode sprinkled on the side =D (never Eco)
During rush hour, my drive to work (45 mins) my gauge is showing ~15L/100KM
TBH I don't think 13-13.5L/100km average per tank is unreasonable for a V6 300HP car.
I owned a g35, V6 298hp car prior, and it averaged about 14-15L/100km per tank.
If you're looking for a fuel efficient Lexus, you've bought the wrong car.
Should have bought the CT200H, or some form of their hybrid cars.
First week I drove it, I got it down to 9.9L/100km citiy, but that was with Eco mode + Snow mode (no it wasn't snowing yet) + suppeeerrr light on the gas. IT DROVE ME CRAZY! I didn't buy the Lexus to be gas efficient and let a 1999 civic pass me!
Now I say, **** it, at least normal mode, and I'll step on the gas as much as I want. Way more enjoyable drive when you stop caring about the MPG lol.
I say, enjoy your V6, don't worry too much about gas!
#11
Hmm,i got the 250 F Sport and it works to get it under 12l/100km. Most of the Time i Drive in the City. Eco on. Right now i got 11,4l/100km that makes a range of 500-550Km with a filling.
I made now 1100km an the mpg is ok for that Engine imho.
I made now 1100km an the mpg is ok for that Engine imho.
#12
I always get 23 to 26 MPG, is350 f sport with 11,000 miles, about 75% highway mileage.
Do keep in mind that the programming for Sport/Sport+ makes it a VERY expensive setting. At least 8th gear is locked out, 7th as well I believe.
So if you are in Sport or Sport+, it's costing you 5MPG or so. Ouch.
I'd love to have the Sport+ suspension settings and simultaneous use of my entire transmission, but they guy who decided that $45k near-luxury cars don't need the adjustable seats, coin holder, or power tilt wheel of a Corolla decreed against it.
Do keep in mind that the programming for Sport/Sport+ makes it a VERY expensive setting. At least 8th gear is locked out, 7th as well I believe.
So if you are in Sport or Sport+, it's costing you 5MPG or so. Ouch.
I'd love to have the Sport+ suspension settings and simultaneous use of my entire transmission, but they guy who decided that $45k near-luxury cars don't need the adjustable seats, coin holder, or power tilt wheel of a Corolla decreed against it.
#13
My Is250 is getting 23.0 rightnow with 400 miles My Bmw M4 is getting 21.3
Driving pattern is similar is both cars but i do push my M4 more often than i do in is Its just that it has old engine without fuel saving technology
Driving pattern is similar is both cars but i do push my M4 more often than i do in is Its just that it has old engine without fuel saving technology
#15
Rookie
Thread Starter
yours are all so better than mine. Im still hitting 17L/100km thoe I should mention that I hardly even reach 90 km speed during a week's driving. Tehran's traffic is insane...