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Mazda RX-8 vs. Hyundai Genesis MPG

Chart is based on 202 fuel economy reports for the Mazda RX-8 and 133 fuel economy reports for the Hyundai Genesis.

Mazda RX-8 MPG

Mazda RX-8 Mazda RX-8 2010 17.1 MPG Highway Percentage 55 percent Mazda RX-8 Mazda RX-8 2009 17.5 MPG Highway Percentage 53 percent Mazda RX-8 Mazda RX-8 2008 20.9 MPG Highway Percentage 67 percent Mazda RX-8 Mazda RX-8 2007 18.4 MPG Highway Percentage 33 percent Mazda RX-8 Mazda RX-8 2007 22.5 MPG Highway Percentage 51 percent Mazda RX-8 Mazda RX-8 2006 19.1 MPG Highway Percentage 67 percent Mazda RX-8 Mazda RX-8 2006 17.3 MPG Highway Percentage 3 percent Mazda RX-8 Mazda RX-8 2005 18.6 MPG Highway Percentage 60 percent Mazda RX-8 Mazda RX-8 2004 17.5 MPG Highway Percentage 44 percent Mazda RX-8 Mazda RX-8 2004 17.3 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
2010 4dr Coupe 232-horsepower 1.3L R2
6-speed manual RWD		 flat med light 1 22 22 55 74 17.1  
2009 4dr Coupe 232-horsepower 1.3L R2
6-speed manual RWD		 flat med none 2 16 29 53 68 17.5  
2008 4dr Coupe 232-horsepower 1.3L R2
6-speed manual RWD		 flat med light 3 16 15 67 72 20.9  
2007 4dr Coupe 232-horsepower 1.3L R2
6-speed manual RWD		 flat med none 5 14 48 33 79 18.4  
2007 4dr Coupe 212-horsepower 1.3L R2
6-speed shiftable automatic RWD		 flat med light 15 24 10 51 78 22.5  
2006 4dr Coupe 238-horsepower 1.3L R2
6-speed manual RWD		 flat med none 9 10 13 67 66 19.1  
2006 4dr Coupe 212-horsepower 1.3L R2
6-speed shiftable automatic RWD		 flat med light 5 28 65 3 60 17.3  
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2005 4dr Coupe 238-horsepower 1.3L R2
6-speed manual RWD		 flat med light 6 16 18 60 77 18.6  
2004 4dr Coupe 238-horsepower 1.3L R2
6-speed manual RWD		 flat med light 7 25 24 44 77 17.5  
2004 4dr Coupe 197-horsepower 1.3L R2
4-speed shiftable automatic RWD		 flat lead light 42 12 23 23 70 17.3  

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

Hyundai Genesis MPG

Hyundai Genesis Hyundai Genesis 2015 29.7 MPG Highway Percentage 95 percent Hyundai Genesis Hyundai Genesis 2015 19.8 MPG Highway Percentage 27 percent Hyundai Genesis Hyundai Genesis 2015 31.1 MPG Highway Percentage 80 percent Hyundai Genesis Hyundai Genesis 2012 25.7 MPG Highway Percentage 84 percent Hyundai Genesis Hyundai Genesis 2012 26.4 MPG Highway Percentage 61 percent Hyundai Genesis Hyundai Genesis 2011 23.0 MPG Highway Percentage 55 percent Hyundai Genesis Hyundai Genesis 2010 23.1 MPG Highway Percentage 64 percent Hyundai Genesis Hyundai Genesis 2010 21.3 MPG Highway Percentage 42 percent Hyundai Genesis Hyundai Genesis 2009 21.0 MPG Highway Percentage 34 percent Hyundai Genesis Hyundai Genesis 2009 23.2 MPG Highway Percentage 51 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
2015 4dr Sedan 420-horsepower 5.0L V8
8-speed shiftable automatic RWD		 hills med none 3 3 0 95 73 29.7  
2015 4dr Sedan 311-horsepower 3.8L V6
8-speed shiftable automatic RWD		 flat med light 9 37 28 27 79 19.8  
2015 4dr Sedan 311-horsepower 3.8L V6
8-speed shiftable automatic AWD		 flat med light 0 12 8 80 70 31.1  
2012 4dr Sedan 429-horsepower 5.0L V8
8-speed shiftable automatic RWD		 flat light light 1 10 4 84 74 25.7  
2012 4dr Sedan 333-horsepower 3.8L V6
8-speed shiftable automatic RWD		 flat light light 2 5 33 61 73 26.4  
2011 4dr Sedan 290-horsepower 3.8L V6
6-speed shiftable automatic RWD		 flat light light 8 6 31 55 76 23.0  
2010 4dr Sedan 375-horsepower 4.6L V8
6-speed shiftable automatic RWD		 flat med hvy 5 9 22 64 70 23.1  
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2010 4dr Sedan 290-horsepower 3.8L V6
6-speed shiftable automatic RWD		 flat med hvy 4 16 39 42 77 21.3  
2009 4dr Sedan 375-horsepower 4.6L V8
6-speed shiftable automatic RWD		 flat med light 11 21 34 34 73 21.0  
2009 4dr Sedan 290-horsepower 3.8L V6
6-speed shiftable automatic RWD		 flat med light 9 19 22 51 79 23.2  

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This page shows only averages. See all the Hyundai Genesis fuel economy data.

Mazda RX-8 vs. Hyundai Genesis 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 Mazda RX-8 and Hyundai Genesis'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 Coupes
See TrueDelta's information for all Mazda models and Hyundai 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 Hyundai Genesis

Hyundai Genesis Real Gas Mileage: Cons
YearComment
2009 While competitors have been switching to relatively small turbocharged engines, the Genesis continues to rely on larger normally aspirated ones. Even the base car's 3.8-liter V6 is nearly twice the size of the Audi's turbocharged 2.0-liter four-cylinder engine. Also, Hyundai doesn't yet offer automatic stop/start. The most significant impact: the Genesis gets much worse fuel economy. With two-wheel drive, the A6 2.0T scored 24 mpg city, 35 mpg highway in the EPA's tests, the Genesis 3.8 only 18/29. Add all-wheel drive, and the Audi's ratings fall to 22/32, the Hyundai's to 16/25, not good. Hyundai has developed a new turbocharged 3.3-liter V6 to replace the 3.8, but it isn't clear how soon this new, more efficient and more powerful engine will be available in the Genesis G80. It won't be available when the car arrives this summer, so most likely the 2018 model year. According to the trip computer, my real-world fuel economy was well above the EPA figures. Only when I drove the Genesis fairly aggressively did the trip computer average fall below 20 mpg. On my usual suburban route it averaged around 23 mpg, and on a 70-mph highway it averaged about 30 mpg. The former was still a few mpg short of the Audi, but the latter was at least as good. If the trip computer is accurate, the fuel economy of the Genesis isn't nearly as dismal as the EPA ratings indicate. see full Hyundai Genesis review
 

What Our Members Are Saying about the Real Gas Mileage of the Hyundai Genesis

Hyundai Genesis Real Gas Mileage: Pros
YearBody/PowertrainComment
2012 4dr Sedan 333-horsepower 3.8L V6
8-speed shiftable automatic RWD		 This is my second Genesis. First one was a 2010 4.6L and this has the 6 cyl and it is nearly as quick but gets better fuel mileage. I get in the high 20's on the highway. Used to get 25 to 27 in the 8cyl. This 2012 has an 8 speed transmission compared to the 2010's 7 speed. see full Hyundai Genesis review
2010 4dr Sedan 375-horsepower 4.6L V8
6-speed shiftable automatic RWD		 about average for a V8, nothing special see full Hyundai Genesis review
Hyundai Genesis Real Gas Mileage: Cons
YearBody/PowertrainComment
2010 4dr Sedan 375-horsepower 4.6L V8
6-speed shiftable automatic RWD		 I would like the economy to be higher... 20-28 range see full Hyundai Genesis review
2009 4dr Sedan 290-horsepower 3.8L V6
6-speed shiftable automatic RWD		 With all the added technology, I would have expected better mileage. I average slightly less than 20 MPH and that is the same as an older heavier STS without the latest and greatest engine management features. see full Hyundai Genesis review
2009 4dr Sedan 375-horsepower 4.6L V8
6-speed shiftable automatic RWD		 Others say they are getting the 18 to 24 MPG claimed. I find that when I do 80% "suburban driving" (strip malls, lights, in/out of car, etc), I get 16 at best. When I am doing 80 on the highway w/ cruise control, I get 23-26. see full Hyundai Genesis review