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Lexus GS vs. Lexus IS MPG

Chart is based on 33 fuel economy reports for the Lexus GS and 142 fuel economy reports for the Lexus IS.

Lexus GS MPG

Lexus GS Lexus GS 2010 26.8 MPG Highway Percentage 90 percent Lexus GS Lexus GS 2008 21.4 MPG Highway Percentage 20 percent Lexus GS Lexus GS 2008 24.1 MPG Highway Percentage 57 percent Lexus GS Lexus GS 2008 23.5 MPG Highway Percentage 53 percent Lexus GS Lexus GS 2008 25.0 MPG Highway Percentage 28 percent Lexus GS Lexus GS 2007 25.3 MPG Highway Percentage 55 percent Lexus GS Lexus GS 2007 24.9 MPG Highway Percentage 55 percent Lexus GS Lexus GS 2006 20.8 MPG Highway Percentage 52 percent Lexus GS Lexus GS 2006 24.5 MPG Highway Percentage 35 percent Lexus GS Lexus GS 2006 20.0 MPG Highway Percentage 35 percent Lexus GS Lexus GS 2005 20.4 MPG Highway Percentage 20 percent Lexus GS Lexus GS 2003 22.1 MPG Highway Percentage 60 percent Lexus GS Lexus GS 2001 22.9 MPG Highway Percentage 50 percent Lexus GS Lexus GS 2000 23.0 MPG Highway Percentage 25 percent
Year Body/Powertrain flat, hilly, or mountainousLand driving style: very light to "lead foot"Foot A/C use: none to heavyA/C constant stop and goTraf % many stops per mileCity % stop every mile or twoSub % fairly steady speedHwy % Hwy Spd MPG
2010 4dr Sedan 303-horsepower 3.5L V6
6-speed shiftable automatic AWD
flat med none 0 0 10 90 75 26.8  
2008 4dr Sedan 342-horsepower 4.6L V8
8-speed shiftable automatic RWD
flat med light 50 20 10 20 100 21.4  
2008 4dr Sedan 303-horsepower 3.5L V6
6-speed shiftable automatic RWD
flat light hvy 3 8 32 57 77 24.1  
2008 4dr Sedan 303-horsepower 3.5L V6
6-speed shiftable automatic AWD
flat lead light 5 15 28 53 73 23.5  
2008 4dr Sedan 292-horsepower 3.5L V6 Hybrid
6-speed shiftable CVT RWD
flat lead light 21 24 27 28 75 25.0  
2007 4dr Sedan 303-horsepower 3.5L V6
6-speed shiftable automatic RWD
flat med light 7 22 17 55 72 25.3  
2007 4dr Sedan 292-horsepower 3.5L V6 Hybrid
6-speed shiftable CVT RWD
flat med light 10 18 17 55 78 24.9  
2006 4dr Sedan 300-horsepower 4.3L V8
6-speed shiftable automatic RWD
flat light light 19 13 16 52 65 20.8  
2006 4dr Sedan 245-horsepower 3.0L V6
6-speed shiftable automatic RWD
flat light light 16 22 28 35 70 24.5  
2006 4dr Sedan 245-horsepower 3.0L V6
6-speed shiftable automatic AWD
flat light hvy 0 62 3 35 66 20.0  
2005 4dr Sedan 220-horsepower 3.0L I6
5-speed shiftable automatic RWD
flat med light 20 30 30 20 65 20.4  
2003 4dr Sedan 220-horsepower 3.0L I6
5-speed shiftable automatic RWD
flat med hvy 10 0 30 60 70 22.1  
2001 4dr Sedan 300-horsepower 4.3L V8
5-speed automatic RWD
flat med light 0 0 50 50 75 22.9  
2000 4dr Sedan 220-horsepower 3.0L I6
5-speed automatic RWD
flat v.lt none 25 25 25 25 40 23.0  

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This page shows only averages. See all the Lexus GS fuel economy data.

Lexus IS MPG

Lexus IS Lexus IS 2016 18.7 MPG Highway Percentage 20 percent Lexus IS Lexus IS 2010 20.3 MPG Highway Percentage 2 percent Lexus IS Lexus IS 2010 21.8 MPG Highway Percentage 15 percent Lexus IS Lexus IS 2010 20.3 MPG Highway Percentage 44 percent Lexus IS Lexus IS 2009 25.4 MPG Highway Percentage 57 percent Lexus IS Lexus IS 2009 27.0 MPG Highway Percentage 70 percent Lexus IS Lexus IS 2008 17.7 MPG Highway Percentage 28 percent Lexus IS Lexus IS 2008 24.9 MPG Highway Percentage 40 percent Lexus IS Lexus IS 2008 31.0 MPG Highway Percentage 55 percent Lexus IS Lexus IS 2008 22.4 MPG Highway Percentage 21 percent Lexus IS Lexus IS 2008 20.5 MPG Highway Percentage 20 percent Lexus IS Lexus IS 2007 24.6 MPG Highway Percentage 50 percent Lexus IS Lexus IS 2007 31.8 MPG Highway Percentage 80 percent Lexus IS Lexus IS 2007 25.3 MPG Highway Percentage 45 percent Lexus IS Lexus IS 2006 22.1 MPG Highway Percentage 30 percent Lexus IS Lexus IS 2006 24.9 MPG Highway Percentage 47 percent Lexus IS Lexus IS 2006 24.0 MPG Highway Percentage 65 percent Lexus IS Lexus IS 2005.5 23.3 MPG Highway Percentage 60 percent Lexus IS Lexus IS 2005 15.9 MPG Highway Percentage 11 percent Lexus IS Lexus IS 2004 19.0 MPG Highway Percentage 50 percent Lexus IS Lexus IS 2004 21.1 MPG Highway Percentage 66 percent Lexus IS Lexus IS 2004 24.0 MPG Highway Percentage 48 percent Lexus IS Lexus IS 2003 19.6 MPG Highway Percentage 41 percent Lexus IS Lexus IS 2002 21.7 MPG Highway Percentage 26 percent Lexus IS Lexus IS 2002 19.6 MPG Highway Percentage 35 percent Lexus IS Lexus IS 2002 21.5 MPG Highway Percentage 23 percent
Year Body/Powertrain flat, hilly, or mountainousLand driving style: very light to "lead foot"Foot A/C use: none to heavyA/C constant stop and goTraf % many stops per mileCity % stop every mile or twoSub % fairly steady speedHwy % Hwy Spd MPG
2016 4dr Sedan 306-horsepower 3.5L V6
8-speed shiftable automatic RWD
flat light light 50 10 20 20 70 18.7  
2010 4dr Sedan 416-horsepower 5.0L V8
8-speed shiftable automatic RWD
flat med light 0 0 98 2 80 20.3  
2010 4dr Sedan 204-horsepower 2.5L V6
6-speed shiftable automatic RWD
flat med light 5 70 10 15 60 21.8  
2010 4dr Sedan 204-horsepower 2.5L V6
6-speed shiftable automatic AWD
hills med none 7 16 33 44 83 20.3  
2009 4dr Sedan 204-horsepower 2.5L V6
6-speed shiftable automatic RWD
flat light none 2 9 33 57 90 25.4  
2009 4dr Sedan 204-horsepower 2.5L V6
6-speed shiftable automatic AWD
hills light light 5 5 20 70 65 27.0  
2008 4dr Sedan 416-horsepower 5.0L V8
8-speed shiftable automatic RWD
flat med hvy 20 25 27 28 70 17.7  
2008 4dr Sedan 306-horsepower 3.5L V6
6-speed shiftable automatic RWD
hills med none 16 20 25 40 66 24.9  
2008 4dr Sedan 204-horsepower 2.5L V6
6-speed shiftable automatic RWD
flat v.lt light 15 15 15 55 70 31.0  
2008 4dr Sedan 204-horsepower 2.5L V6
6-speed shiftable automatic AWD
flat light light 4 18 57 21 61 22.4  
2008 4dr Sedan 204-horsepower 2.5L V6
6-speed manual RWD
flat med light 8 63 10 20 110 20.5  
2007 4dr Sedan 306-horsepower 3.5L V6
6-speed shiftable automatic RWD
flat med light 6 21 23 50 75 24.6  
2007 4dr Sedan 204-horsepower 2.5L V6
6-speed shiftable automatic RWD
flat light hvy 5 5 10 80 70 31.8  
2007 4dr Sedan 204-horsepower 2.5L V6
6-speed shiftable automatic AWD
flat light light 5 23 28 45 63 25.3  
2006 4dr Sedan 306-horsepower 3.5L V6
6-speed shiftable automatic RWD
flat med light 7 50 13 30 71 22.1  
2006 4dr Sedan 204-horsepower 2.5L V6
6-speed shiftable automatic RWD
flat med light 9 25 20 47 88 24.9  
2006 4dr Sedan 204-horsepower 2.5L V6
6-speed shiftable automatic AWD
hills light light 5 5 25 65 70 24.0  
2005.5 4dr Sedan 204-horsepower 2.5L V6
6-speed manual RWD
flat med none 20 20 0 60 80 23.3  
2005 4dr Sedan 215-horsepower 3.0L I6
5-speed shiftable automatic RWD
flat med light 41 49 0 11 59 15.9  
2004 4dr Wagon 215-horsepower 3.0L I6
5-speed shiftable automatic RWD
flat lead hvy 20 15 15 50 75 19.0  
2004 4dr Sedan 215-horsepower 3.0L I6
5-speed shiftable automatic RWD
flat med light 1 27 6 66 77 21.1  
2004 4dr Sedan 215-horsepower 3.0L I6
5-speed manual RWD
flat med light 7 29 16 48 71 24.0  
2003 4dr Sedan 215-horsepower 3.0L I6
5-speed shiftable automatic RWD
flat med light 9 33 18 41 88 19.6  
2002 4dr Wagon 215-horsepower 3.0L I6
5-speed shiftable automatic RWD
flat med light 12 19 43 26 80 21.7  
2002 4dr Sedan 215-horsepower 3.0L I6
5-speed shiftable automatic RWD
flat med light 10 40 15 35 68 19.6  
2002 4dr Sedan 215-horsepower 3.0L I6
5-speed manual RWD
flat med light 15 24 39 23 73 21.5  

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This page shows only averages. See all the Lexus IS fuel economy data.

Lexus GS vs. Lexus IS MPG

Unlike other fuel economy surveys, TrueDelta's Real-World Gas Mileage Survey includes questions about how and where a car was driven. So you can get an idea of the Lexus GS and Lexus IS's where a car was driven. So you can get an idea of their real-world MPG based on how and where you drive a car.

See TrueDelta's information for all Sedans
See TrueDelta's information for all Lexus models.

TrueDelta Reviews the Real Gas Mileage of the Lexus GS

Lexus GS Real Gas Mileage: Cons
YearComment
In casual suburban driving the trip computer reported between 22 and 23 mpg, splitting the difference between the EPA ratings of 19 city and 26 highway. When I made the engine sing mpg dropped into the high teens. Slip into Eco and drive the GS like a Prius, and 25 is barely doable. Not bad for a 306-horsepower, two-ton, all-wheel-drive sedan. But the torquier Audi A6 3.0T and BMW 535i xDrive do a little better, especially on the highway. The Teuton's turbos help a little here, but most of the blame/credit goes to their respective transmissions. If and when Lexus fits the GS AWD with the eight-speed automatic already offered in the RWD car, it'll likely catch up. see full Lexus GS review
 

What Our Members Are Saying about the Real Gas Mileage of the Lexus GS

Lexus GS Real Gas Mileage: Pros
YearBody/PowertrainComment
2009 4dr Sedan 303-horsepower 3.5L V6
6-speed shiftable automatic RWD
I have been averaging 26 MPG (indicated) in mixed suburban and highway driving, which I think is pretty good. see full Lexus GS review
2008 4dr Sedan 292-horsepower 3.5L V6 Hybrid
6-speed shiftable CVT RWD
For 340 hp and a 0-60 of 5.2 seconds, I consider an average of 24 in the city and 33 on the highway to be incredible. If you really feather the gas and stick to 65 on the highway you can get around 36-38 mpg. see full Lexus GS review
2007 4dr Sedan 292-horsepower 3.5L V6 Hybrid
6-speed shiftable CVT RWD
Low consumption in city and stop and go traffic Significant fuel savings in typical German highway driving - plenty of acceleration to and braking from high speeds. The hybrid drivetrain minimises the cost of this compared to conventional petrol power see full Lexus GS review
 

TrueDelta Reviews the Real Gas Mileage of the Lexus IS

Lexus IS Real Gas Mileage: Cons
YearComment
The 2014 IS 350 manages 19 mpg in the EPA city test, and 28 in the highway test. While these figures tie those for the Cadillac ATS 3.6, they're short of the 23/33 achieved by the BMW 335i. Also, with both the BMW and the Cadillac you can step down to more efficient turbocharged four-cylinder engines. With the new IS, your only other engine option is a small V6, and its fuel economy is only a couple mpg better than that of the big V6 (21/30). The BMW has a further advantage: you can set the steering and suspension to "Sport" without forcing the transmission to hold a lower gear. In the 2014 IS 350 F Sport, the sport modes are "all or nothing." Select one to firm up the steering and suspension, and the transmission won't shift beyond sixth gear, reducing fuel economy. Lexus should follow Audi's lead and offer an "Individual" mode, where each system (powertrain, steering, suspension, etc.) can be set separately. see full Lexus IS review
 

What Our Members Are Saying about the Real Gas Mileage of the Lexus IS

Lexus IS Real Gas Mileage: Pros
YearBody/PowertrainComment
2010 4dr Sedan 204-horsepower 2.5L V6
6-speed shiftable automatic RWD
Almost as good as Prius, this is the hybrid 250h see full Lexus IS review
2010 4dr Sedan 204-horsepower 2.5L V6
6-speed shiftable automatic AWD
Our 2010 IS 250 has given us 30 mph highway mileage. I consider it very very good. see full Lexus IS review
2009 4dr Sedan 204-horsepower 2.5L V6
6-speed shiftable automatic AWD
Good highway fuel economy, can average 30+ mpg see full Lexus IS review
2009 4dr Sedan 306-horsepower 3.5L V6
6-speed shiftable automatic RWD
Excellent fuel economy... overall 24 mpg city and highway combined. As high as 32 mpg highway driving in Arizona mountains. see full Lexus IS review
2008 4dr Sedan 204-horsepower 2.5L V6
6-speed shiftable automatic AWD
Good fuel economy for a 1600kg car with AWD. see full Lexus IS review
2008 4dr Sedan 204-horsepower 2.5L V6
6-speed shiftable automatic AWD
My real world economy has been 33 mpg hwy (not the computer figure, an optimistic 34.5-35)which is better than expected and slightly over 20 in city driving (not heavy traffic), also better than expected see full Lexus IS review
2006 4dr Sedan 204-horsepower 2.5L V6
6-speed shiftable automatic RWD
At around 200hp, it isnt the fastest luxury sedan. However, on my roadtrip across the eastern / mid eastern USA I was able to get ~33 ish mpg (computer reported) on flat terrain and premium fuel. City mpg is what I expect,22-25ish. But I think it is great as a long distance comfortable vehicle. see full Lexus IS review
Lexus IS Real Gas Mileage: Cons
YearBody/PowertrainComment
2009 4dr Sedan 204-horsepower 2.5L V6
6-speed shiftable automatic RWD
Wish it got better fuel economy for such a small car and engine... Sticker is 21/29, I'm averaging 27MPG (computer read); avg on hwy is about 33-34 mpg while city is about 19-23mpg. Engine variety would help, a 4 cyl + turbo or something, but toyota/lexus isn't exactly known for that. see full Lexus IS review
2002 4dr Wagon 215-horsepower 3.0L I6
5-speed shiftable automatic RWD
For a small, relatively modestly powered car, it gets poor economy. Corvettes and most Porsches get better economy. see full Lexus IS review