Hyundai Genesis vs. Mazda B-Series Truck MPG

Chart is based on 133 fuel economy reports for the Hyundai Genesis and 8 fuel economy reports for the Mazda B-Series Truck.

Hyundai Genesis MPG

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

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

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
2006	2dr Regular Cab 6ft bed 143-horsepower 2.3L I4 5-speed manual RWD	flat	med	hvy	0	33	33	33	60	25.2
2003	2dr Extended Cab 6ft bed 154-horsepower 3.0L V6 5-speed automatic RWD	flat	med	hvy	0	15	55	30	70	18.2
2002	2dr Extended Cab 6ft bed 207-horsepower 4.0L V6 5-speed automatic 4WD, part-time w/low range	flat	light	light	15	40	25	20	100	18.5
2002	2dr Extended Cab 6ft bed 147-horsepower 3.0L V6 5-speed automatic RWD	flat	light	none	0	50	0	50	67	20.0
2000	4dr Extended Cab 6ft bed 160-horsepower 4.0L V6 5-speed automatic RWD	flat	med	hvy	0	25	25	50	65	15.5
2000	2dr Extended Cab 6ft bed 160-horsepower 4.0L V6 5-speed automatic 4WD, part-time w/low range	flat	lead	none	35	10	10	45	70	19.1

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Hyundai Genesis Real Gas Mileage: Cons
Year	Comment
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

Hyundai Genesis Real Gas Mileage: Pros
Year	Body/Powertrain	Comment
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
Year	Body/Powertrain	Comment
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

Mazda B-Series Truck Real Gas Mileage: Pros
Year	Body/Powertrain	Comment
2002	2dr Extended Cab 6ft bed 147-horsepower 3.0L V6 5-speed automatic RWD	A quick comment about motor oil: Castrol GTX Extended Mileage improved my observed MPG by 2! I have always run Castrol GTX, the non-synthetic, cheapest bottle, "dino" oil. It has always performed well as far as I could tell, but I saw a $15 jug at Wal*Mart intended/designed for the 75,000+ engines out there. On a whim I tried it, and instead of my mileage averaging 19-21, I actually got a run of 22.9. The 22.9 MPG was on a strictly highway cruising trip of 4 hours total, but I was completed surprised. I switched back to the normal GTX at the next oil change, and my mileage dropped back to 19-21 MPG. I always change oil around 4-5,000 miles. I always use high quality filters like Mobil 1. see full Mazda B-Series Truck review