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Kia Rio vs. Mazda RX-8 MPG

Chart is based on 122 fuel economy reports for the Kia Rio and 202 fuel economy reports for the Mazda RX-8.

Kia Rio MPG

Kia Rio Kia Rio 2009 27.0 MPG Highway Percentage 0 percent Kia Rio Kia Rio 2009 27.8 MPG Highway Percentage 57 percent Kia Rio Kia Rio 2009 37.1 MPG Highway Percentage 40 percent Kia Rio Kia Rio 2008 40.0 MPG Highway Percentage 90 percent Kia Rio Kia Rio 2008 32.9 MPG Highway Percentage 50 percent Kia Rio Kia Rio 2008 21.7 MPG Highway Percentage 0 percent Kia Rio Kia Rio 2007 27.9 MPG Highway Percentage 75 percent Kia Rio Kia Rio 2007 36.5 MPG Highway Percentage 76 percent Kia Rio Kia Rio 2007 30.7 MPG Highway Percentage 40 percent Kia Rio Kia Rio 2006 29.0 MPG Highway Percentage 5 percent Kia Rio Kia Rio 2006 26.9 MPG Highway Percentage 20 percent Kia Rio Kia Rio 2006 31.1 MPG Highway Percentage 36 percent Kia Rio Kia Rio 2003 29.3 MPG Highway Percentage 35 percent Kia Rio Kia Rio 2001 36.1 MPG Highway Percentage 65 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
2009 4dr Sedan 110-horsepower 1.6L I4
5-speed manual FWD		 hills light none 10 70 20 0 N/A 27.0  
2009 4dr Hatch 110-horsepower 1.6L I4
5-speed manual FWD		 flat light hvy 1 32 10 57 70 27.8  
2009 4dr Hatch 110-horsepower 1.6L I4
4-speed automatic FWD		 flat light none 0 0 60 40 60 37.1  
2008 4dr Sedan 110-horsepower 1.6L I4
5-speed manual FWD		 flat v.lt none 5 5 0 90 65 40.0  
2008 4dr Sedan 110-horsepower 1.6L I4
4-speed automatic FWD		 hills v.lt none 0 25 25 50 65 32.9  
2008 4dr Hatch 110-horsepower 1.6L I4
4-speed automatic FWD		 flat med none 29 57 14 0 0 21.7  
2007 4dr Sedan 96-horsepower 1.4L I4
4-speed automatic FWD		 flat med none 0 15 10 75 130 27.9  
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2007 4dr Sedan 110-horsepower 1.6L I4
4-speed automatic FWD		 flat light light 0 13 12 76 73 36.5  
2007 4dr Hatch 110-horsepower 1.6L I4
5-speed manual FWD		 hills med hvy 0 20 40 40 70 30.7  
2006 4dr Sedan 110-horsepower 1.6L I4
5-speed manual FWD		 flat med light 70 10 15 5 120 29.0  
2006 4dr Sedan 110-horsepower 1.6L I4
4-speed automatic FWD		 flat med none 0 80 0 20 60 26.9  
2006 4dr Hatch 110-horsepower 1.6L I4
5-speed manual FWD		 flat light light 0 37 27 36 119 31.1  
2003 4dr Sedan 104-horsepower 1.6L I4
4-speed automatic FWD		 flat med light 5 40 20 35 55 29.3  
2001 4dr Sedan 96-horsepower 1.5L I4
5-speed manual FWD		 flat light none 20 10 5 65 60 36.1  

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This page shows only averages. See all the Kia Rio fuel economy data.

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.

Kia Rio vs. Mazda RX-8 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 Kia Rio and Mazda RX-8'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 and Hatchbacks.
See TrueDelta's information for all Kia models and Mazda models.

What Our Members Are Saying about the Real Gas Mileage of the Kia Rio

Kia Rio Real Gas Mileage: Pros
YearBody/PowertrainComment
2016 4dr Sedan 138-horsepower 1.6L I4
6-speed shiftable automatic FWD		 Very good fuel econmy. 7 to 8 L/100km over the month I drove it. Temps were quite cold also and there was some idling (warm up) time. see full Kia Rio review
2010 4dr Sedan 110-horsepower 1.6L I4
4-speed automatic FWD		 really good on fuel for daughters commute to school see full Kia Rio review
2009 4dr Sedan 110-horsepower 1.6L I4
4-speed automatic FWD		 The vehicle was rated at 35-41 MPG. Very good economy for a non-hybrid. see full Kia Rio review
2008 4dr Sedan 110-horsepower 1.6L I4
4-speed automatic FWD		 Fuel economy stays above 30 MPG, even during fast (75 MPH+) highway driving. see full Kia Rio review
2008 4dr Sedan 110-horsepower 1.6L I4
5-speed manual FWD		 From a 17mpg average Chevy truck to NEVER getting less than 29mpg city, need I say more? Well okay, how about 37mpg on a freeway run. I have only got 13000 miles on the vehicle, and can imagine the fuel economy will improve still more. see full Kia Rio review
2007 4dr Sedan 110-horsepower 1.6L I4
4-speed automatic FWD		 I get 35mpg with it on the highway. see full Kia Rio review
Kia Rio Real Gas Mileage: Cons
YearBody/PowertrainComment
2011 4dr Hatch 110-horsepower 1.6L I4
4-speed automatic FWD		 Although this car is rated at 50 mi.per Imp.Gal. the best we can get is 44 mpg. see full Kia Rio review
2008 4dr Sedan 110-horsepower 1.6L I4
4-speed automatic FWD		 doesnt get the mileage that they claimed it does.customer servive tried to tell me how to drive to save gas, i told them i already drive as they suggested see full Kia Rio 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