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Kia Soul vs. Mazda RX-8 MPG

Chart is based on 224 fuel economy reports for the Kia Soul and 202 fuel economy reports for the Mazda RX-8.

Kia Soul MPG

Kia Soul Kia Soul 2023 35.7 MPG Highway Percentage 74 percent Kia Soul Kia Soul 2022 33.2 MPG Highway Percentage 100 percent Kia Soul Kia Soul 2015 23.7 MPG Highway Percentage 25 percent Kia Soul Kia Soul 2014 30.9 MPG Highway Percentage 58 percent Kia Soul Kia Soul 2014 29.7 MPG Highway Percentage 25 percent Kia Soul Kia Soul 2013 27.0 MPG Highway Percentage 90 percent Kia Soul Kia Soul 2013 28.9 MPG Highway Percentage 25 percent Kia Soul Kia Soul 2013 30.0 MPG Highway Percentage 29 percent Kia Soul Kia Soul 2012 29.2 MPG Highway Percentage 66 percent Kia Soul Kia Soul 2012 28.9 MPG Highway Percentage 42 percent Kia Soul Kia Soul 2012 27.4 MPG Highway Percentage 73 percent Kia Soul Kia Soul 2012 34.2 MPG Highway Percentage 76 percent Kia Soul Kia Soul 2011 31.1 MPG Highway Percentage 58 percent Kia Soul Kia Soul 2011 26.3 MPG Highway Percentage 37 percent Kia Soul Kia Soul 2011 31.8 MPG Highway Percentage 24 percent Kia Soul Kia Soul 2010 28.1 MPG Highway Percentage 32 percent Kia Soul Kia Soul 2010 28.6 MPG Highway Percentage 72 percent Kia Soul Kia Soul 2010 26.9 MPG Highway Percentage 40 percent Kia Soul Kia Soul 2010 33.4 MPG Highway Percentage 74 percent Kia Soul Kia Soul 2009.5 42.5 MPG Highway Percentage 50 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
2023 4dr Hatch 147-horsepower 2.0L I4
8-speed shiftable CVT FWD
flat light light 0 0 26 74 71 35.7  
2022 4dr Hatch 147-horsepower 2.0L I4
8-speed shiftable CVT FWD
flat light none 0 0 0 100 50 33.2  
2015 4dr Hatch 130-horsepower 1.6L I4
6-speed shiftable automatic FWD
flat light light 10 40 25 25 70 23.7  
2014 4dr Hatch 164-horsepower 2.0L I4
6-speed shiftable automatic FWD
flat v.lt none 0 2 40 58 69 30.9  
2014 4dr Hatch 130-horsepower 1.6L I4
6-speed shiftable automatic FWD
flat med hvy 15 50 10 25 60 29.7  
2013 4dr Hatch 164-horsepower 2.0L I4
6-speed shiftable automatic FWD
hills light none 0 5 5 90 70 27.0  
2013 4dr Hatch 164-horsepower 2.0L I4
6-speed manual FWD
flat med light 10 20 45 25 70 28.9  
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2013 4dr Hatch 138-horsepower 1.6L I4
6-speed shiftable automatic FWD
flat v.lt none 17 33 21 29 40 30.0  
2012 4dr Hatch 164-horsepower 2.0L I4
6-speed shiftable automatic FWD
flat light none 6 14 15 66 70 29.2  
2012 4dr Hatch 164-horsepower 2.0L I4
6-speed manual FWD
flat light light 0 51 6 42 64 28.9  
2012 4dr Hatch 138-horsepower 1.6L I4
6-speed shiftable automatic FWD
flat light light 10 7 10 73 71 27.4  
2012 4dr Hatch 138-horsepower 1.6L I4
6-speed manual FWD
flat light none 2 10 12 76 69 34.2  
2011 4dr Hatch 142-horsepower 2.0L I4
5-speed manual FWD
flat light light 0 13 29 58 64 31.1  
2011 4dr Hatch 142-horsepower 2.0L I4
4-speed automatic FWD
flat light light 9 30 25 37 68 26.3  
2011 4dr Hatch 122-horsepower 1.6L I4
5-speed manual FWD
flat light none 9 20 47 24 64 31.8  
2010 4dr Hatch turbocharged 126hp 1.6L I4 Diesel
5-speed manual FWD
flat light light 37 18 13 32 60 28.1  
2010 4dr Hatch 142-horsepower 2.0L I4
5-speed manual FWD
flat light light 6 13 10 72 64 28.6  
2010 4dr Hatch 142-horsepower 2.0L I4
4-speed automatic FWD
flat light light 9 24 27 40 72 26.9  
2010 4dr Hatch 122-horsepower 1.6L I4
5-speed manual FWD
flat light light 9 15 1 74 72 33.4  
2009.5 4dr Hatch turbocharged 126hp 1.6L I4 Diesel
5-speed manual FWD
hills v.lt light 10 20 20 50 60 42.5  

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

Kia Soul Electric Fuel Economy

Kia Soul Kia Soul 2016 21.4 MPG Highway Percentage 5 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
2016 4dr Hatch 109-horsepower Electric
1-speed automatic FWD
flat light light 0 0 95 5 50 21.4  

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This page shows only averages. See all the Kia Soul 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 Soul 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 Soul 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 Hatchbacks
See TrueDelta's information for all Kia models and Mazda models.

TrueDelta Reviews the Real Gas Mileage of the Kia Soul

Kia Soul Real Gas Mileage: Pros
YearComment
2015 The top reason to buy any EV is fuel economy. Both the Soul EV and the e-Golf used about 20 kWh of electricity per 100 miles of suburban driving, with the Kia perhaps ten percent less efficient than the Volkswagen. Their EPA MPGe (miles per gallon equivalent) ratings are 120/92 and 126/105, respectively. With the average cost of a kWh about 12 cents, this works out to 2.4 cents per mile. Some people will pay one-third this amount by recharging at night in an area with low rates. Assuming 30 MPG and $2.50 per gallon (low by recent historical standards), a fairly efficient gasoline-powered car burns 8.3 cents of fuel per mile. Drive a little over 10,000 miles a year, and the annual savings works out to $600 even assuming 12 cents per kWh. But what about range? This will vary based on driving mix and style. Go easy on the pedals--especially the brakes--in the suburbs without heat or A/C and it's easy to beat the EPA range estimates of 93 miles for the Soul and 83 for the Golf. The former was the best during 2015 for any compact EV, while the latter was about the class average. (For 2016 the Nissan LEAF will have an EPA range esimate of 105 miles.) Of course, that's quite a few qualifications. In cold or hot weather running the heat or A/C will significantly reduce range. To help avoid this, the seats in the top trim Soul EV can be heated or cooled. Those in the e-Golf can only be heated. Highway miles drain the battery packs even more quickly than the EPA figures suggest, because the EPA assumes a relatively low cruising speed. On a 70-MPH Interstate the e-Golf's range fell by about a third. The Soul EV, with a taller, chunkier body, should suffer at least as much. Still, most people rarely need to drive farther than these cars can go between charges unless they're traveling (in which case a non-Tesla EV isn't practical). Recharging via a standard wall outlet can take over 15 hours in either car. Anyone who will often drive more than 50 miles per day should seriously consider having a 240-volt wall charger installed in their home. Chargers cost about $600, but this is without installation, which can easily add another $600 (depending on the specifics of your house). see full Kia Soul review
 

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

Kia Soul Real Gas Mileage: Pros
YearBody/PowertrainComment
2013 4dr Hatch 164-horsepower 2.0L I4
6-speed shiftable automatic FWD
We averaged 29 mpg US gallon driving in 100 degree weather in Phoenix for 3 weeks with the AC on continuously. Driving at a spirited pace, not just cruising along. see full Kia Soul review
2010 4dr Hatch 122-horsepower 1.6L I4
5-speed manual FWD
30+ MPG see full Kia Soul review
2010 4dr Hatch 142-horsepower 2.0L I4
4-speed automatic FWD
I get about 26 to 28mpg, I got 315 miles on 12 gallons of fuel. I could probably get better mileage, but I have a heavy foot. see full Kia Soul review
2010 4dr Hatch 142-horsepower 2.0L I4
4-speed automatic FWD
I travel highway to work everyday (130 kms to work and back) so I was looking for a bigger car with power and great fuel economy. see full Kia Soul review
2010 4dr Hatch 142-horsepower 2.0L I4
5-speed manual FWD
equal to my current nissan sedan, good for trips when we need to take gear but doesnt require a full size SUV that gets 20 MPG see full Kia Soul review
2010 4dr Hatch 142-horsepower 2.0L I4
4-speed automatic FWD
Good fuel economy, which I was looking for. I used the CARS Program so I needed a +10 mpg improvement. see full Kia Soul review
2010 4dr Hatch 142-horsepower 2.0L I4
5-speed manual FWD
When new I was getting 30 MPG out of the gate. Now on longer trips at 65 MPH I get 31+ At 55 (roughly 2500 RPM I get 34 MPG. see full Kia Soul review
2010 4dr Hatch 142-horsepower 2.0L I4
5-speed manual FWD
good enough see full Kia Soul review
2010 4dr Hatch 142-horsepower 2.0L I4
5-speed manual FWD
The EPA estimates seem to be pretty accurate give or take for driving styles. see full Kia Soul review
Kia Soul Real Gas Mileage: Cons
YearBody/PowertrainComment
2012 4dr Hatch 164-horsepower 2.0L I4
6-speed shiftable automatic FWD
Poor at 30MPG! Its stated highway mileage was 34MPG. Never have we got that.... see full Kia Soul review
2010 4dr Hatch 142-horsepower 2.0L I4
4-speed automatic FWD
For a car its size, with a 1.6 liter engine and :-( an automatic transmission, mileage is no better than a much larger, smoother-riding Buick Lacrosse. Disappointing. However, Kia -- fast learners -- fixed this for the 2012 models. see full Kia Soul review
2010 4dr Hatch 142-horsepower 2.0L I4
4-speed automatic FWD
I am somewhat dissappointed in the gas mileage I have been getting with my Soul. I average about 28MPG, city or highway. Not much difference between long and short trips. see full Kia Soul 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