I have a Mazda 2019 GT FWD that's supposed to get 26 city / 31 highway

My ODO/total miles is 400 (car is brand new) but over that time, i'm only getting 21 mpg.

I drive in Los Angeles traffic so maybe that's why, but i was expecting that 26 in the city, actually meant a city like Los Angeles.

Perhaps I need to wait until i pass 600 miles (break in period as the user above mentioned), but lmk if anyone else with similar specs are getting better mileage. Thanks,

 

dblazeon,
I have about 4000 miles on the CX5 Sig now. But, it's winter and every commute to and from work I've been letting the car warm up on idle for 5 minutes or longer because it's been so freaking cold here in Minnesota. My combined mileage is 24 mpg including all this idling. But, this past autumn on long drives to Winona, MN- about 160 miles one way on 2 lanes going 60 mph I was getting about 33-34 mpg. Even at 70 mph on the freeway I'm still getting around 32-33 mpg.

 

damn this makes me feel like something is wrong with my car, or LA traffic is just really bad for mileage. Hopefully after the break in period it gets better

 

Keep in mind, cars take a fair amount of time to truly "break-in"; twenty-thousand miles is not unusual before cars start returning peak mileage

The most extreme example in my experience was a 1998 model we purchased brand new; we picked it up the day before a long family vacation; during that trip we drove nearly 1,200 miles and averaged only 19 mpg (the first tank was only 17-something). Over the next decade the fuel economy gradually improved, in spite of the fact we went from E0 to E10 gasoline, to the point where the same vacation, loaded with the same camping stuff, but two much larger kids, returned over 25 mpg. The best that vehicle ever got was just a hair over 28 (just over 500 miles on that tank on 17.7 gallons of E10), but it was completely empty of all seats and cargo, and that was when it had 145,000 miles on the clock.

 

Seems to be pretty low but you are still within break-in period. Our 2018 GT AWD gets about 27 mpg with mixed driving (most of our commute is within town).

 

I know this doesn't help you at all.. but I wanted to share some info i saw months ago on a Mazda youtube video .. They were interviewing the guy that represents Mazda in the USA, they asked him about the Turbo engine and the advantages. Then they asked him about the different types of fuel to use.. It was interesting to learn that the turbo cx-5 doesn't get the advantages of high octane fuel until ( ABOVE) 4000 RPMs.. he said below 4000 rpm high and low octane have the same results.

 

Interesting, that implies a "Tune" could unlock a lot of low and mid range torque.

 

Yes, based on a published graph, the additional hp from using high octane gas comes on after 4,000, and then gradually tapers down.

 

2019 CX-5 GTR Purchased 30 Dec 2019
Last fill up 26 Feb: 25.4 mpg freeway AUS - DFW avg speed 80 mph
Two fill ups ago 21 Feb: 22.2 mpg city/freeway 60/40
Avg mileage since owned: 23.5 mpg
Current ODO 1891 so it’s not broken in.
Tires stock Toyos: 35psi
Fuel: 91 or 92 octane
Mileage measured = current ODO - last ODO/gallons this fill up

Peace

 

1. Yes, there is always a break-in despite what the dealer says. As the piston rings marry the cylinder walls and the plain bearings in the lower end get to know their surrounding neighborhood the engine *should* smooth out. It will also adapt to your driving style and get more efficient as you go.
2. See data in post above.

Peace