MENU
1 0 3 4 3 4

We are 103,000+ car owners sharing real-world car information.

Join Us

Mazda RX-8 vs. Lexus GS Fuel Economy (km/L)

Chart is based on 202 fuel economy reports for the Mazda RX-8 and 34 fuel economy reports for the Lexus GS.

Mazda RX-8 km/L

Mazda RX-8 Mazda RX-8 2010 40.2 MPG Highway Percentage 55 percent Mazda RX-8 Mazda RX-8 2009 41.2 MPG Highway Percentage 53 percent Mazda RX-8 Mazda RX-8 2008 49.1 MPG Highway Percentage 67 percent Mazda RX-8 Mazda RX-8 2007 41.4 MPG Highway Percentage 33 percent Mazda RX-8 Mazda RX-8 2007 52.9 MPG Highway Percentage 51 percent Mazda RX-8 Mazda RX-8 2006 41.9 MPG Highway Percentage 67 percent Mazda RX-8 Mazda RX-8 2006 40.7 MPG Highway Percentage 3 percent Mazda RX-8 Mazda RX-8 2005 40.7 MPG Highway Percentage 60 percent Mazda RX-8 Mazda RX-8 2004 31.0 MPG Highway Percentage 44 percent Mazda RX-8 Mazda RX-8 2004 40.7 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 km/L
2010 4dr Coupe 232-horsepower 1.3L R2
6-speed manual RWD		 flat med light 1 22 22 55 74 40.2  
2009 4dr Coupe 232-horsepower 1.3L R2
6-speed manual RWD		 flat med none 2 16 29 53 68 41.2  
2008 4dr Coupe 232-horsepower 1.3L R2
6-speed manual RWD		 flat med light 3 16 15 67 72 49.1  
2007 4dr Coupe 232-horsepower 1.3L R2
6-speed manual RWD		 flat med none 5 14 48 33 79 41.4  
2007 4dr Coupe 212-horsepower 1.3L R2
6-speed shiftable automatic RWD		 flat med light 15 24 10 51 78 52.9  
2006 4dr Coupe 238-horsepower 1.3L R2
6-speed manual RWD		 flat med none 9 10 13 67 66 41.9  
2006 4dr Coupe 212-horsepower 1.3L R2
6-speed shiftable automatic RWD		 flat med light 5 28 65 3 60 40.7  
Looking for a warranty? Get a quote.
2005 4dr Coupe 238-horsepower 1.3L R2
6-speed manual RWD		 flat med light 6 16 18 60 77 40.7  
2004 4dr Coupe 238-horsepower 1.3L R2
6-speed manual RWD		 flat med light 7 25 24 44 77 31.0  
2004 4dr Coupe 197-horsepower 1.3L R2
4-speed shiftable automatic RWD		 flat lead light 42 12 23 23 70 40.7  

Return to top

This page shows only averages. See all the Mazda RX-8 fuel economy data.

Lexus GS km/L

Lexus GS Lexus GS 2013 68.4 MPG Highway Percentage 90 percent Lexus GS Lexus GS 2010 63.0 MPG Highway Percentage 90 percent Lexus GS Lexus GS 2008 9.1 MPG Highway Percentage 20 percent Lexus GS Lexus GS 2008 56.8 MPG Highway Percentage 57 percent Lexus GS Lexus GS 2008 55.2 MPG Highway Percentage 53 percent Lexus GS Lexus GS 2008 58.9 MPG Highway Percentage 28 percent Lexus GS Lexus GS 2007 59.5 MPG Highway Percentage 55 percent Lexus GS Lexus GS 2007 75.7 MPG Highway Percentage 55 percent Lexus GS Lexus GS 2006 48.8 MPG Highway Percentage 52 percent Lexus GS Lexus GS 2006 57.6 MPG Highway Percentage 35 percent Lexus GS Lexus GS 2006 47.1 MPG Highway Percentage 35 percent Lexus GS Lexus GS 2005 48.0 MPG Highway Percentage 20 percent Lexus GS Lexus GS 2003 52.0 MPG Highway Percentage 60 percent Lexus GS Lexus GS 2001 53.8 MPG Highway Percentage 50 percent Lexus GS Lexus GS 2000 54.1 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 km/L
2013 4dr Sedan 306-horsepower 3.5L V6
6-speed shiftable automatic RWD		 flat light light 5 5 0 90 75 68.4  
2010 4dr Sedan 303-horsepower 3.5L V6
6-speed shiftable automatic AWD		 flat med none 0 0 10 90 75 63.0  
2008 4dr Sedan 342-horsepower 4.6L V8
8-speed shiftable automatic RWD		 flat med light 50 20 10 20 100 9.1  
2008 4dr Sedan 303-horsepower 3.5L V6
6-speed shiftable automatic RWD		 flat light hvy 3 8 32 57 77 56.8  
2008 4dr Sedan 303-horsepower 3.5L V6
6-speed shiftable automatic AWD		 flat lead light 5 15 28 53 73 55.2  
2008 4dr Sedan 292-horsepower 3.5L V6 Hybrid
6-speed shiftable CVT RWD		 flat lead light 21 24 27 28 75 58.9  
2007 4dr Sedan 303-horsepower 3.5L V6
6-speed shiftable automatic RWD		 flat med light 7 22 17 55 72 59.5  
Looking for a warranty? Get a quote.
2007 4dr Sedan 292-horsepower 3.5L V6 Hybrid
6-speed shiftable CVT RWD		 flat med light 10 18 17 55 78 75.7  
2006 4dr Sedan 300-horsepower 4.3L V8
6-speed shiftable automatic RWD		 flat light light 19 13 16 52 65 48.8  
2006 4dr Sedan 245-horsepower 3.0L V6
6-speed shiftable automatic RWD		 flat light light 16 22 28 35 70 57.6  
2006 4dr Sedan 245-horsepower 3.0L V6
6-speed shiftable automatic AWD		 flat light hvy 0 62 3 35 66 47.1  
2005 4dr Sedan 220-horsepower 3.0L I6
5-speed shiftable automatic RWD		 flat med light 20 30 30 20 65 48.0  
2003 4dr Sedan 220-horsepower 3.0L I6
5-speed shiftable automatic RWD		 flat med hvy 10 0 30 60 70 52.0  
2001 4dr Sedan 300-horsepower 4.3L V8
5-speed automatic RWD		 flat med light 0 0 50 50 75 53.8  
2000 4dr Sedan 220-horsepower 3.0L I6
5-speed automatic RWD		 flat v.lt none 25 25 25 25 40 54.1  

Return to top

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

Mazda RX-8 vs. Lexus GS Fuel Economy (km/L)

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 Mazda RX-8 and Lexus GS's where a car was driven. So you can get an idea of their real-world km/L based on how and where you drive a car.

See TrueDelta's information for all Coupes
See TrueDelta's information for all Mazda models and Lexus models.

What Our Members Are Saying about the Real Gas Mileage of the Mazda RX-8

Mazda RX-8 Real Gas Mileage: Cons
YearBody/PowertrainComment
2009 4dr Coupe 232-horsepower 1.3L R2
6-speed manual RWD		 One of the big downsides of the rotary is truly horrendous fuel economy. When the RX-8 first came out in the early 2000s, its mileage ratings of 16/22 city/highway mpg (stick shift) were just barely acceptable, but there days, with many crossovers hitting more than 30 mpg on the highway, those figures are truly atrocious, especially given respectable but certainly not neck-snapping power. Futhermore, it takes premium. If you're using the RX-8 as it commuter, fuel costs will add up quickly. In my predominantly around-town driving, I typically average between 16-17 mpg. My highest recorded average was 20 mpg on a highway trip at speeds around 75 mph. see full Mazda RX-8 review
2007 4dr Coupe 212-horsepower 1.3L R2
6-speed shiftable automatic RWD		 The EPA numbers are way low compared with my real-world experience. The window sticker showed 18/25 and I have never seen less than 23 with my 40/60 city/highway commute. I think Mazda should develop a lean-burn economy cruise mode for this car. see full Mazda RX-8 review
2006 4dr Coupe 238-horsepower 1.3L R2
6-speed manual RWD		 Lite bit to high consumption when I drive it in normal speed. On full woot its ok. see full Mazda RX-8 review
2005 4dr Coupe 238-horsepower 1.3L R2
6-speed manual RWD		 Worst fuel economy in its class. see full Mazda RX-8 review
2004 4dr Coupe 238-horsepower 1.3L R2
6-speed manual RWD		 Not that bad for what it is, but it seems to me that Mazda's Sky Active technology could help the city mileage. It just needs more R&D. see full Mazda RX-8 review
2004 4dr Coupe 238-horsepower 1.3L R2
6-speed manual RWD		 At 16 m.p.g. on premium grade these days it could be cheaper to take a taxi. see full Mazda RX-8 review
2004 4dr Coupe 238-horsepower 1.3L R2
6-speed manual RWD		 For a small engine displacement and a relatively light vehicle weight, the gas mileage is weak. I usualy get around 19mpg, and that does not realy matter if I am doing all city or all highway driving. I think the real problem is in the sixth gear it isnt much different than fifth gear so it does not provide good fuel economy. see full Mazda RX-8 review
2004 4dr Coupe 238-horsepower 1.3L R2
6-speed manual RWD		 For a car with a 1.9 liter engine I would have expected better than 16-19 MPG. Get your foot into it and the numbers fall drastically. Otherwise I loved that car. It just got too small with a newborn and a big dog. see full Mazda RX-8 review
2004 4dr Coupe 238-horsepower 1.3L R2
6-speed manual RWD		 I gets 20MPG no matter what I do. Running around 20. 1/2 highway 20. All the highway all day 25-26. I think that it could do better. see full Mazda RX-8 review
2004 4dr Coupe 238-horsepower 1.3L R2
6-speed manual RWD		 16-18MPG city, 24MPG highway see full Mazda RX-8 review
 

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