GS - 4th Gen (2013-2020) Discussion about the 2013 and up GS models

Is it just me or is the 19/29 estimated mpg completely false?

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Old 01-24-15, 07:17 AM
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2014GS350F
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Default Is it just me or is the 19/29 estimated mpg completely false?

Recently purchased a 2013 GS 350 AWD FSport with 27K miles. After driving it for a few days in the city and on the highway I'm only getting a little over 19 mph avg with a majority of the miles on the highway. Computer was showing 15.4 while driving in the city. I was expecting a little better than that. I changed the oil and put a new air filter in at purchase. What's everyone else averaging?
Old 01-24-15, 07:27 AM
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Joeb427
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19/26 AWD

I average about 21 with 75% highway.
Around 24.6 highway at 70-75 MPH.
Old 01-24-15, 11:20 AM
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Laostuh
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19avg city and highway then again I only have about 700 miles so I dont think its fully broken in yet
Old 01-24-15, 12:14 PM
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ItzFilyO
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My City average is 15-17 MPG, maybe even lower if it's 100% city.

Highway average is 21 MPG but I've seen 27 before on a flat road cruising at a steady 70 MPH.

My combined MPG is 19, this is my daily commute MPG.

These are all in Eco mode. I don't know if there is a difference between Normal and Eco in terms of MPG, maybe 1 MPG difference? I know Sport+ will definitely use more fuel due to the very touchy throttle response and always high RPM.
Old 01-24-15, 12:20 PM
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bclexus
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Originally Posted by 2014GS350F
Recently purchased a 2013 GS 350 AWD FSport with 27K miles. After driving it for a few days in the city and on the highway I'm only getting a little over 19 mph avg with a majority of the miles on the highway. Computer was showing 15.4 while driving in the city. I was expecting a little better than that. I changed the oil and put a new air filter in at purchase. What's everyone else averaging?
Take a look at your average speed in the display of the instrument cluster. You may be surprised just how low your average speed is due to stop-and-go city driving.

If I'm only in slow (40 mph max) stop-and-go city traffic I might only average 15-20 mph and get ~15 MPG. Throw in some highway driving and the average might improve to ~20 MPG, while all [flat] highway driving at a constant speed with no stopping might get ~27+ MPG.
Old 01-24-15, 12:26 PM
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AL13NV8D3R
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2014 GS 350 RWD Luxury Package loaded with 15,800 miles on the odo and averaging 24 mpgs combines. I get about 19 City and 27 Highway
Old 01-24-15, 12:27 PM
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sick21
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In 2014 the RWD got the 19/29 est. I don't feel it's easy to achieve but I also don't feel like it should be super difficult to achieve, so I haven't tried all that hard after 7k miles. At first I was disappointed but now I don't really care, it's not all that bad after all.
Old 01-24-15, 12:36 PM
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ItzFilyO
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Originally Posted by sick21
In 2014 the RWD got the 19/29 est. I don't feel it's easy to achieve but I also don't feel like it should be super difficult to achieve, so I haven't tried all that hard after 7k miles. At first I was disappointed but now I don't really care, it's not all that bad after all.
Basically, once I start hearing my engine roaring all MPG hell break loose!
Old 01-24-15, 01:51 PM
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Got about 5k miles on my 14 and its a year old . I average about 21.5 . Mixed equally highway and street commute to work .
Old 01-24-15, 02:01 PM
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Break in period !
Old 01-24-15, 02:20 PM
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PirelliRC
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2014 GS 350 RWD with 5,700 miles. Tomorrow will be precisely 4 months that i have the vehicle.

On average I get about 17.7 city and 25 highway. I always fill up full tank when my cruising range is is around 5-10 miles left , and the shortest distance that i have ever traveled with my GS was 260 miles, which is about 17.1. mpg. However, the best that ive done with a lot of highway driving and non-aggressive driving has been around 330 miles, 21.7 mpg. That a big difference, 70 miles. But for the majority of the time my average on a full tank is around 290-300 miles, so 19.5 mpg would be my average. But keep in my i reside in Hollywood, and the traffic here in the city and highway is horrible for the better part of the day.

I know i can get around 23-24 mpg pretty easily with a little more restraint but i only drive in Sport mode because i desire the sharper throttle response and the stiffer steering wheel. I never drive in ECO, it drives me crazy. Im more than happy getting 20 mpg.

Last edited by PirelliRC; 01-24-15 at 03:36 PM.
Old 01-24-15, 03:30 PM
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ItzFilyO
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I have 6K miles now and my MPG is still the same as the day I drove it off the lot. Maybe my car is still breaking in until 500K miles?
Old 01-24-15, 03:37 PM
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Gas price at Costco = $2.34 and falling for Premium
I'm getting 19-20 mpg and I keep it in Eco model unless some fool in a BMW wants to battle (Then I'm in Sport+).

Old 01-24-15, 03:49 PM
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18 city with moderate driving and 26 highway with conservative driving.
Old 01-24-15, 03:52 PM
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sick21
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Originally Posted by ItzFilyO
I have 6K miles now and my MPG is still the same as the day I drove it off the lot. Maybe my car is still breaking in until 500K miles?
Haha that's what I'm assuming!


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