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Mazda5 Owners MPG-Real World Numbers

378 messages,  Last post on Nov 23, 2009 at 1:42 PM

You are in the Mazda Mazda5 Forum. Your Host is Karens

What is this discussion about? Mazda MAZDA5, Fuel Efficiency (MPG), Van


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#41 of 378
First Tank manual at 26 mpg mostly city driving! by bwaters
Sep 13, 2005 (6:34 pm)
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I'll post the next few tanks if I get the chance to fill the tank and record. It is just about 80% city and 20% highway, 310 miles, a little less than 12 gallons rounded high to 26 mpg. I did top it off and bet the dealer didn't. We have three drivers. I've driven about 120, (all in city) my wife has driven about 150 ( at least 40 highway) and our son has driven about 20.
#42 of 378
about 30 mpg (US), 5spd, easy on the pedal. by flyonthewall
Sep 15, 2005 (1:42 pm)
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My first tank and I got about 30 mpg (USA#s).
 
The pump shut off at 11.5 gal, but I was able to squeeze in 12.2 gal. So, if the dealer didn't top it off, I got 30.3, if he really toped it off, I got 28.5.
 
This is a 5spd, about 70% city, AC maybe 70% of the time, and driving very mellow with just me and one or two small kids. (I drove it like I drove for my last tank in my previous vehicle. For that last tank in my previous vehicle I got 12.5 mpg (unloaded)! This is one reason I'm driving a micro van in leu of a 91 3/4 ton, 4x4, GMC w/ a 350 v8 and tow package.)
 
Time will tell if this tank is really representative...
#43 of 378
3rd tank. All city. Nowhere close to you high milers... by truckasaurus
Sep 16, 2005 (2:33 pm)
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1st tank 17MPG
2nd 18MPG
3rd 19MPG
 
Auto. Touring model.
Austin, TX. Hills, 90+ degrees most days so A/C on high.
US MPG's.
#44 of 378
Re: 3rd tank. All city. Nowhere close to you high milers... [truckasaurus] by frank4cars
Sep 16, 2005 (3:28 pm)
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Replying to: truckasaurus (Sep 16, 2005 2:33 pm)

Holy cow! That's even worse than mine! Are you towing a 12 foot trailer by any chance? At least it appears to be getting better. After 2 months I'm averaging about 21, although I've learned that it's as quick as a first gen Miata up to 60.
#45 of 378
2 tanks by elzi121
Sep 20, 2005 (7:53 am)
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Just dopped my car off for the recall, have only filled up twice (first time was only about 3/4 tank).
 
Auto Touring Model, US Gallons, mixed highway and city.
1st tank: 20 mpg
2nd tank: 24 mpg
 
Can't wait to get the car back to see if it gets better.
#46 of 378
mileage vs 2006 Volvo V50 by bdclary
Sep 21, 2005 (10:29 am)
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I've been interested in the Mazda5 recently, but the other day I saw a Volvo V50 in the parking lot, and when I got home, did some research.
 
Without having real world numbers from the V50, I'm only comparing EPA estimates. But even so, with both cars nearly identical in all physical dimensions including weight, how does the V50, with a higher output engine (168 hp vs 157 hp), get better gas mileage than the 5 (25/30 vs 22/27)? Even the turbo 5 gets better highway mileage (21/30) and delivers 218 hp.
 
It can't be weight, as both are within 50 lbs of each other. And the 5 has a lower coefficient of drag (0.31 vs 0.32).
 
Any ideas? Am I missing something?
#47 of 378
Re: mileage vs 2006 Volvo V50 [bdclary] by frank4cars
Sep 21, 2005 (3:13 pm)
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Replying to: bdclary (Sep 21, 2005 10:29 am)

cd is only part of the equation, there is also frontal area to consider, and the Volvo uses a 5-speed auto compared to 4-speed in the 5.
#48 of 378
Re: mileage vs 2006 Volvo V50 [frank4cars] by bdclary
Sep 27, 2005 (6:32 am)
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Replying to: frank4cars (Sep 21, 2005 3:13 pm)

The mileage I quoted for the Mazda5 is for the 5-speed manual, not the automatic. Unfortunately, I can't find any frontal area information to compare the two. Does anyone know where I can find this?
#49 of 378
Re: mileage vs 2006 Volvo V50 [bdclary] by smaria
Sep 27, 2005 (8:24 am)
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Replying to: bdclary (Sep 27, 2005 6:32 am)

Here's my analysis:
 
Mazda5, 5-speed manual: 22/27 MPG EPA
 
Volvo V50, 5-speed auto: 22/30 MPG EPA
               (w/ T5 engine): 22/31 MPG EPA
 
So, they all perform identically in the city, but the Volvo does better on the highway.
 
Mazda5 Weight: 3333
Volvo V50 Weight: 3058
 
The Mazda5 is almost 300 pounds heavier than the Volvo V50, partly because the Mazda5 has a third row of seats (no third row in the Volvo V50).
 
As for the drag, a rough estimate can be made by multiplying the car's width by its height (assuming the car has a square frontal area...not true but the best I can do for now):
 
Mazda5: 64.2 high x 69.1 wide = 4436 square inches
Volvo V50: 57.2 high x 69.7 wide = 3987 square inches
 
Multiply by the drag coefficients (0.32 for the Volvo, 0.31 for the Mazda), and we get drag values of 1375 for the Mazda5 and 1275 for the Volvo V50. That's 7.8% more drag on the Mazda5. The extra 7 inches of height in the Mazda5 increases its drag, decreasing its highway EPA rating. You really feel those 7 inches though...I bet it's a noticable difference if you sit in the 2 cars. I love feeling high off the ground in the Mazda5.
 
As for Volvo's 200-hp engine getting better gas mileage than the 160-hp engines, I guess that's just a very efficient engine.
#50 of 378
Milage by roverton
Oct 01, 2005 (7:09 pm)
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30 highway
22.5 city
25 mixed.
 
I still cannot figure out why the mazda3 rental is getting 25mpg on the highway.

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