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Kia Forte vs. Mercury Mariner MPG

Chart is based on 326 fuel economy reports for the Kia Forte and 35 fuel economy reports for the Mercury Mariner.

Kia Forte MPG

Kia Forte Kia Forte 2015 30.7 MPG Highway Percentage 40 percent Kia Forte Kia Forte 2013 24.4 MPG Highway Percentage 23 percent Kia Forte Kia Forte 2012 28.1 MPG Highway Percentage 70 percent Kia Forte Kia Forte 2012 27.1 MPG Highway Percentage 52 percent Kia Forte Kia Forte 2011 31.3 MPG Highway Percentage 39 percent Kia Forte Kia Forte 2011 27.9 MPG Highway Percentage 30 percent Kia Forte Kia Forte 2011 28.4 MPG Highway Percentage 72 percent Kia Forte Kia Forte 2010 28.0 MPG Highway Percentage 45 percent Kia Forte Kia Forte 2010 26.4 MPG Highway Percentage 58 percent Kia Forte Kia Forte 2010 25.6 MPG Highway Percentage 23 percent Kia Forte Kia Forte 2010 28.3 MPG Highway Percentage 48 percent Kia Forte Kia Forte 2010 27.6 MPG Highway Percentage 59 percent Kia Forte Kia Forte 2010 23.1 MPG Highway Percentage 53 percent Kia Forte Kia Forte 2010 27.9 MPG Highway Percentage 73 percent Kia Forte Kia Forte 2010 32.1 MPG Highway Percentage 68 percent Kia Forte Kia Forte 2010 32.6 MPG Highway Percentage 56 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 173-horsepower 2.0L I4
6-speed shiftable automatic FWD		 flat light light 0 5 55 40 97 30.7  
2013 4dr Sedan 156-horsepower 2.0L I4
6-speed shiftable automatic FWD		 flat med none 13 48 16 23 107 24.4  
2012 4dr Sedan 156-horsepower 2.0L I4
6-speed shiftable automatic FWD		 flat light light 0 30 0 70 90 28.1  
2012 4dr Hatch 156-horsepower 2.0L I4
6-speed shiftable automatic FWD		 flat light none 8 22 18 52 68 27.1  
2011 4dr Sedan 156-horsepower 2.0L I4
6-speed shiftable automatic FWD		 flat light hvy 0 28 32 39 72 31.3  
2011 4dr Sedan 156-horsepower 2.0L I4
6-speed manual FWD		 flat light none 0 0 70 30 70 27.9  
2011 4dr Hatch 156-horsepower 2.0L I4
6-speed shiftable automatic FWD		 flat light none 3 16 9 72 72 28.4  
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2010 4dr Sedan 173-horsepower 2.4L I4
6-speed manual FWD		 flat light hvy 10 20 25 45 60 28.0  
2010 4dr Sedan 173-horsepower 2.4L I4
5-speed shiftable automatic FWD		 hills med none 7 29 5 58 112 26.4  
2010 4dr Sedan 156-horsepower 2.0L I4
5-speed manual FWD		 flat med none 1 57 20 23 68 25.6  
2010 4dr Sedan 156-horsepower 2.0L I4
5-speed automatic FWD		 flat med light 2 40 10 48 68 28.3  
2010 4dr Sedan 156-horsepower 2.0L I4
4-speed automatic FWD		 flat light none 4 25 12 59 91 27.6  
2010 2dr Coupe 173-horsepower 2.4L I4
6-speed manual FWD		 hills lead light 28 15 5 53 100 23.1  
2010 2dr Coupe 173-horsepower 2.4L I4
5-speed shiftable automatic FWD		 flat med light 3 7 17 73 67 27.9  
2010 2dr Coupe 156-horsepower 2.0L I4
5-speed manual FWD		 flat med hvy 0 20 13 68 73 32.1  
2010 2dr Coupe 156-horsepower 2.0L I4
4-speed automatic FWD		 flat light hvy 5 9 30 56 65 32.6  

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

Mercury Mariner MPG

Mercury Mariner Mercury Mariner 2011 18.9 MPG Highway Percentage 10 percent Mercury Mariner Mercury Mariner 2009 20.6 MPG Highway Percentage 30 percent Mercury Mariner Mercury Mariner 2009 35.5 MPG Highway Percentage 44 percent Mercury Mariner Mercury Mariner 2009 32.3 MPG Highway Percentage 60 percent Mercury Mariner Mercury Mariner 2008 22.0 MPG Highway Percentage 25 percent Mercury Mariner Mercury Mariner 2008 21.4 MPG Highway Percentage 33 percent Mercury Mariner Mercury Mariner 2008 30.8 MPG Highway Percentage 23 percent Mercury Mariner Mercury Mariner 2007 23.4 MPG Highway Percentage 61 percent Mercury Mariner Mercury Mariner 2007 29.8 MPG Highway Percentage 18 percent Mercury Mariner Mercury Mariner 2006 23.1 MPG Highway Percentage 45 percent Mercury Mariner Mercury Mariner 2006 21.5 MPG Highway Percentage 75 percent Mercury Mariner Mercury Mariner 2006 30.6 MPG Highway Percentage 31 percent Mercury Mariner Mercury Mariner 2005 21.0 MPG Highway Percentage 15 percent Mercury Mariner Mercury Mariner 2005 22.3 MPG Highway Percentage 75 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
2011 4dr SUV 240-horsepower 3.0L V6
6-speed automatic FWD		 flat v.lt none 30 30 30 10 60 18.9  
2009 4dr SUV 240-horsepower 3.0L V6
6-speed automatic FWD		 flat light light 20 20 30 30 70 20.6  
2009 4dr SUV 153-horsepower 2.5L I4 Hybrid
CVT FWD		 flat light light 11 13 31 44 60 35.5  
2009 4dr SUV 153-horsepower 2.5L I4 Hybrid
CVT AWD		 flat med light 30 0 10 60 80 32.3  
2008 4dr SUV 200-horsepower 3.0L V6
4-speed automatic FWD		 flat light light 0 45 30 25 70 22.0  
2008 4dr SUV 200-horsepower 3.0L V6
4-speed automatic AWD		 flat light none 0 8 60 33 60 21.4  
2008 4dr SUV 133-horsepower 2.3L I4 Hybrid
CVT AWD		 flat light hvy 5 18 55 23 65 30.8  
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2007 4dr SUV 200-horsepower 3.0L V6
4-speed automatic AWD		 flat light light 0 3 37 61 63 23.4  
2007 4dr SUV 133-horsepower 2.3L I4 Hybrid
CVT AWD		 flat light light 11 16 56 18 70 29.8  
2006 4dr SUV 200-horsepower 3.0L V6
4-speed automatic FWD		 flat light light 8 13 35 45 62 23.1  
2006 4dr SUV 200-horsepower 3.0L V6
4-speed automatic AWD		 flat med light 0 0 25 75 75 21.5  
2006 4dr SUV 133-horsepower 2.3L I4 Hybrid
CVT AWD		 hills light light 16 18 35 31 70 30.6  
2005 4dr SUV 200-horsepower 3.0L V6
4-speed automatic AWD		 flat light light 0 0 85 15 60 21.0  
2005 4dr SUV 153-horsepower 2.3L I4
4-speed automatic AWD		 flat v.lt light 3 13 8 75 67 22.3  

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This page shows only averages. See all the Mercury Mariner fuel economy data.

Kia Forte vs. Mercury Mariner 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 Forte and Mercury Mariner'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, Coupes, and Hatchbacks.
See TrueDelta's information for all Kia models and Mercury models.

TrueDelta Reviews the Real Gas Mileage of the Kia Forte

Kia Forte Real Gas Mileage: Pros
YearComment
2019 The Kia Forte's EPA fuel economy ratings of 30 mpg city and 40 mpg highway aren't quite best in class, but they're close. Unless you include the 55/49 Honda Insight and the 53/52 Toyota Corolla Hybrid in the class--then they're not so close. In my real-world suburban driving I observed trip computer averages in the low 40s in the Forte, similar to a 2016 Civic LX with a similarly sized, similarly non-turbo engine. A Civic EX, with a turbocharged 1.5-liter engine, should do a few mpg better. In the hybrid Honda Insight, I observed suburban trip computer averages in the 60s, but "only" 40 mpg on the highway, not even as good as the non-hybrids. see full Kia Forte review
Kia Forte Real Gas Mileage: Cons
YearComment
I've made it through the top reasons to buy a Kia Forte SX, but no mention of performance and handling (the reasons to upgrade from lesser trims) yet. But neither is the top reason not to buy one, either. Okay, maybe handling is. I'm trying to decide as I write this. Handling definitely isn't the car's largest weakness. That would be fuel economy. With a manual transmission, the Kia Forte SX achieves worst-in-class EPA ratings: 22 mpg city and 29 mpg highway. (The automatic goes a mile farther on each highway gallon.) Mind you, the Civic doesn't do much better, with 22/31. But the big-engined Mazda achieves 25/37 with a manual, and a lofty 28/39 with an automatic. And the much quicker Volkswagen GTI scores 25/34 and 25/33, respectively. The Forte EX, with its larger but non-turbocharged engine, is more competitive: 24/33 with the manual and 25/36 with the automatic. Maybe the Forte SX just doesn't test well. In my suburban driving the trip computer reported averages between 25 and 40 (depending on the frequency of stops and the heaviness of my right foot), with most in the low 30s. The trip computers in the Honda, Mazda, and Volkswagen all reported about the same. The Kia's trip computer also reported better-than-EPA averages on the highway, but not by as wide a margin. Short gearing restricted 70-mph-highway averages to about 33, well short of the high 30s observed in the others. see full Kia Forte review
 

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

Kia Forte Real Gas Mileage: Pros
YearBody/PowertrainComment
2012 4dr Sedan 156-horsepower 2.0L I4
6-speed shiftable automatic FWD		 After many trips up and down the eastern USA coast (NY-FL and back) It has proven itself reliable and seems to do very well on the highway. Available power is decent, and fuel mileage is really good. It's unusual f we don't get at least the rated 33MPG but usually are between 35 and 38 with a full passenger load and moderately filled trunk. see full Kia Forte review
2011 4dr Hatch 156-horsepower 2.0L I4
6-speed shiftable automatic FWD		 I was able to get 33 on my first tank going 75 on 90% highway driving and 27 with more mixed driving and highway driving at a highr speed. see full Kia Forte review
2010 2dr Coupe 173-horsepower 2.4L I4
5-speed shiftable automatic FWD		 even with a lead foot i get 20-24 mpg and on a long road trip 600 miles easily achieved 33 mpg, while still being fun to drive see full Kia Forte review
2010 4dr Sedan 156-horsepower 2.0L I4
4-speed automatic FWD		 Seemed rather impressive, especially given its acceleration relative to others in the class. see full Kia Forte review
 

What Our Members Are Saying about the Real Gas Mileage of the Mercury Mariner

Mercury Mariner Real Gas Mileage: Pros
YearBody/PowertrainComment
2010 0 171-horsepower 2.5L I4
6-speed automatic FWD		 getting 31 mpg highway see full Mercury Mariner review
2009 4dr SUV 171-horsepower 2.5L I4
6-speed automatic FWD		 Has been very good and getting better see full Mercury Mariner review
2009 4dr SUV 240-horsepower 3.0L V6
6-speed automatic FWD		 Coming from a Trailblazer, we like the average of 21-22 MPG in mixed driving, as were used to about 17 MPG. Fuel economy climbs toward the rated 26 MPG the more highway driving we do. see full Mercury Mariner review
2007 4dr SUV 200-horsepower 3.0L V6
4-speed automatic AWD		 For the first almost three years after we got the car, it gave 21+ mpg in town & 24+ mpg on the road. see full Mercury Mariner review
2005 4dr SUV 153-horsepower 2.3L I4
4-speed automatic AWD		 For an SUV with a 4cyl and 4wd I get avg of 22 MPG mixed city and highway. I usually get 23-26 on freeway only. This is good. see full Mercury Mariner review
Mercury Mariner Real Gas Mileage: Cons
YearBody/PowertrainComment
2007 4dr SUV 200-horsepower 3.0L V6
4-speed automatic AWD		 For some reason when new Michelin All Terrain tires with Nitrogen air replaced the Champions from the factory, it plummeted to 17 & 20 mpg. No explanation from Michelin, Costco or Ford/Mercury - they have no idea why. see full Mercury Mariner review