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Chevrolet Sonic vs. Mazda RX-8 MPG

Chart is based on 123 fuel economy reports for the Chevrolet Sonic and 202 fuel economy reports for the Mazda RX-8.

Chevrolet Sonic MPG

Chevrolet Sonic Chevrolet Sonic 2018 32.2 MPG Highway Percentage 42 percent Chevrolet Sonic Chevrolet Sonic 2013 30.7 MPG Highway Percentage 43 percent Chevrolet Sonic Chevrolet Sonic 2013 37.5 MPG Highway Percentage 51 percent Chevrolet Sonic Chevrolet Sonic 2013 30.9 MPG Highway Percentage 20 percent Chevrolet Sonic Chevrolet Sonic 2012 37.6 MPG Highway Percentage 33 percent Chevrolet Sonic Chevrolet Sonic 2012 25.7 MPG Highway Percentage 61 percent Chevrolet Sonic Chevrolet Sonic 2012 37.5 MPG Highway Percentage 85 percent Chevrolet Sonic Chevrolet Sonic 2012 26.3 MPG Highway Percentage 15 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
2018 4dr Hatch 138-horsepower 1.8L I4
6-speed shiftable automatic FWD		 flat v.lt none 0 35 23 42 60 32.2  
2013 4dr Sedan turbocharged 138hp 1.4L I4
6-speed manual FWD		 flat med light 25 30 3 43 70 30.7  
2013 4dr Sedan 138-horsepower 1.8L I4
6-speed shiftable automatic FWD		 flat light none 1 24 24 51 58 37.5  
2013 4dr Hatch turbocharged 138hp 1.4L I4
6-speed shiftable automatic FWD		 flat light hvy 0 64 16 20 51 30.9  
2012 4dr Sedan turbocharged 138hp 1.4L I4
6-speed manual FWD		 hills med none 3 10 53 33 68 37.6  
2012 4dr Sedan 138-horsepower 1.8L I4
6-speed shiftable automatic FWD		 flat light none 3 28 9 61 60 25.7  
2012 4dr Hatch turbocharged 138hp 1.4L I4
6-speed manual FWD		 flat v.lt none 1 4 10 85 65 37.5  
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2012 4dr Hatch 138-horsepower 1.8L I4
6-speed shiftable automatic FWD		 flat light light 0 52 32 15 70 26.3  

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This page shows only averages. See all the Chevrolet Sonic 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.

Chevrolet Sonic 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 Chevrolet Sonic 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 Chevrolet models and Mazda models.

What Our Members Are Saying about the Real Gas Mileage of the Chevrolet Sonic

Chevrolet Sonic Real Gas Mileage: Pros
YearBody/PowertrainComment
2013 4dr Sedan turbocharged 138hp 1.4L I4
6-speed manual FWD		 The fuel economy is excellent on this car as long as you are not on the pedal too heavy. Freeway (70-75 mph) mileage is around 40 to 42 mpg. Rural highway (55-62 mph) 42-46 mpg. The worst mpg i have every experienced is 36.5. This was mostly in town with the AC on. see full Chevrolet Sonic review
2012 4dr Sedan turbocharged 138hp 1.4L I4
6-speed manual FWD		 Have never got below 37.7 miles to the gallon. I do drive conservatively but even when my husband who drives significantly more aggressive the gas mileage has been excellent see full Chevrolet Sonic review
2012 4dr Sedan 138-horsepower 1.8L I4
6-speed shiftable automatic FWD		 I had a Choice between My Current Car, a Kia Rio , a Ford Focus and Mazda 3. Between ALL these only the Sonic was a Certified Pre-Owned Vheicle and the others were not. The Fuel economy was ALMOST the Same..but i thought the Sonic had faired A Tad bit better. see full Chevrolet Sonic 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