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Lexus LS vs. Mazda RX-8 Fuel Economy (g/100m)

Chart is based on 48 fuel economy reports for the Lexus LS and 202 fuel economy reports for the Mazda RX-8.

Lexus LS g/100m

Lexus LS Lexus LS 2010 4.9 MPG Highway Percentage 80 percent Lexus LS Lexus LS 2009 13.1 MPG Highway Percentage 43 percent Lexus LS Lexus LS 2008 5.0 MPG Highway Percentage 25 percent Lexus LS Lexus LS 2007 4.5 MPG Highway Percentage 55 percent Lexus LS Lexus LS 2006 4.2 MPG Highway Percentage 54 percent Lexus LS Lexus LS 2005 4.4 MPG Highway Percentage 63 percent Lexus LS Lexus LS 2004 5.2 MPG Highway Percentage 35 percent Lexus LS Lexus LS 2003 4.2 MPG Highway Percentage 0 percent Lexus LS Lexus LS 2002 11.9 MPG Highway Percentage 45 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 g/100m
2010 4dr Sedan 357-horsepower 4.6L V8
8-speed shiftable automatic AWD		 flat light hvy 0 20 0 80 65 4.9  
2009 4dr Sedan 380-horsepower 4.6L V8
8-speed shiftable automatic RWD		 flat med hvy 22 22 13 43 103 13.1  
2008 4dr Sedan 380-horsepower 4.6L V8
8-speed shiftable automatic RWD		 flat med light 37 16 22 25 60 5.0  
2007 4dr Sedan 380-horsepower 4.6L V8
8-speed shiftable automatic RWD		 flat light light 9 19 18 55 69 4.5  
2006 4dr Sedan 278-horsepower 4.3L V8
6-speed shiftable automatic RWD		 flat light light 2 15 28 54 67 4.2  
2005 4dr Sedan 290-horsepower 4.3L V8
6-speed shiftable automatic RWD		 flat light light 6 10 21 63 73 4.4  
2004 4dr Sedan 290-horsepower 4.3L V8
6-speed shiftable automatic RWD		 flat med light 6 33 26 35 66 5.2  
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2003 4dr Sedan 290-horsepower 4.3L V8
5-speed automatic RWD		 flat v.lt hvy 0 100 0 0 0 4.2  
2002 4dr Sedan 290-horsepower 4.3L V8
5-speed automatic RWD		 flat light light 7 7 41 45 57 11.9  

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

Mazda RX-8 g/100m

Mazda RX-8 Mazda RX-8 2010 5.9 MPG Highway Percentage 55 percent Mazda RX-8 Mazda RX-8 2009 5.7 MPG Highway Percentage 53 percent Mazda RX-8 Mazda RX-8 2008 4.8 MPG Highway Percentage 67 percent Mazda RX-8 Mazda RX-8 2007 6.7 MPG Highway Percentage 33 percent Mazda RX-8 Mazda RX-8 2007 4.6 MPG Highway Percentage 51 percent Mazda RX-8 Mazda RX-8 2006 7.6 MPG Highway Percentage 67 percent Mazda RX-8 Mazda RX-8 2006 5.8 MPG Highway Percentage 3 percent Mazda RX-8 Mazda RX-8 2005 7.6 MPG Highway Percentage 60 percent Mazda RX-8 Mazda RX-8 2004 13.3 MPG Highway Percentage 44 percent Mazda RX-8 Mazda RX-8 2004 5.8 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 g/100m
2010 4dr Coupe 232-horsepower 1.3L R2
6-speed manual RWD		 flat med light 1 22 22 55 74 5.9  
2009 4dr Coupe 232-horsepower 1.3L R2
6-speed manual RWD		 flat med none 2 16 29 53 68 5.7  
2008 4dr Coupe 232-horsepower 1.3L R2
6-speed manual RWD		 flat med light 3 16 15 67 72 4.8  
2007 4dr Coupe 232-horsepower 1.3L R2
6-speed manual RWD		 flat med none 5 14 48 33 79 6.7  
2007 4dr Coupe 212-horsepower 1.3L R2
6-speed shiftable automatic RWD		 flat med light 15 24 10 51 78 4.6  
2006 4dr Coupe 238-horsepower 1.3L R2
6-speed manual RWD		 flat med none 9 10 13 67 66 7.6  
2006 4dr Coupe 212-horsepower 1.3L R2
6-speed shiftable automatic RWD		 flat med light 5 28 65 3 60 5.8  
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2005 4dr Coupe 238-horsepower 1.3L R2
6-speed manual RWD		 flat med light 6 16 18 60 77 7.6  
2004 4dr Coupe 238-horsepower 1.3L R2
6-speed manual RWD		 flat med light 7 25 24 44 77 13.3  
2004 4dr Coupe 197-horsepower 1.3L R2
4-speed shiftable automatic RWD		 flat lead light 42 12 23 23 70 5.8  

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

Lexus LS vs. Mazda RX-8 Fuel Economy (g/100m)

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 LS and Mazda RX-8's where a car was driven. So you can get an idea of their real-world g/100m based on how and where you drive a car.

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

TrueDelta Reviews the Real Gas Mileage of the Lexus LS

Lexus LS Real Gas Mileage: Cons
YearComment
Nearly everyone except Toyota has been transitioning to boosted engines for fuel efficiency at least as much as for performance. While boosted engines swill gas at least as well as their unboosted equivalents when hustled, in typical driving they are more efficient. With EPA ratings of 16 mpg city, 23 mpg highway, the LS 460 nearly matches the Jaguar XJ AWD (16/24), but falls well short of the Audi A8 3.0T (18/28) and BMW 740Li xDrive (19/28). In the real world, the Lexus's fuel economy lags the others, including the Jaguar, to an even greater degree. In our suburban driving the LS 460's trip computer often reported averages between 15 and 16, vs. low 20s in the Jaguar. A light foot could nudge the LS's average to 18, but the XJ's to 25. On the highway the LS 460's trip computer reported averages of 24.7 and 23.3. The XJ's reported just over 30. see full Lexus LS review
 

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

Lexus LS Real Gas Mileage: Pros
YearBody/PowertrainComment
2001 0 In United Kingdom (Imperial) gallons and miles, over the last 60,000 miles I have averaged 24.6mpg. In town it falls to about 15mpg and on a long run at 85mph (normal cruising speed on UK motorways despite 70mph limit) it returns 27.5mpg see full Lexus LS review
 

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