2003 Astro Poor Gas Mileage

10

Asked by Dec 16, 2009 at 11:26 AM about the 2003 Chevrolet Astro 2WD

Question type: Maintenance & Repair

I recently purchased a 2003 Astro 2WD with 65,000 miles. This is my 5th Astro; all with 3.42 rear non-posi-traction differentials. Each of my previous Astros have averaged 18-19.5 mpg on the highway and 15 mpg in town for me during actual driving. I am meticulous at keeping records and know what my fuel economy is for each fill up. The 2003 Astro has been averaging 13 mpg on the highway and 11-12 mpg locally.  It has a 3.73 posi-traction differential.  As a footnote, I recently traded off a 4x4 Tahoe with the 5.3 V8 and 3.73 rear end gearing which consistently gave 17-18 mpg on the highway and 14 in town.  The EPA mileage I have seen for the 2003 Astro is 17/22 mpg (probably for the standard 3.42 rear end ratio). Has anyone experienced what I am regarding really bad mpg on their late model Astro/Safari?  Were you able to fix the problem?  If so, what was the solution (besides selling/trading off the vehicle)? Or perhaps you can explain to me why what I am seeing is to be expected. The local GM dealerships implied to me they have seen the "problem" before and don't want to deal with it.

3 Answers

55

I have a 1997 Astro with the same poor fuel economy.

1 of 1 people found this helpful.
10

My previous Astros were of that vintage. They all gave me decent mpg (15/18) given the type of vehicle. Is your Astro an AWD unit? What is your differential gear ratio, i.e., 3.42 or 3.73? If you don't know, your local GM dealer parts dept can tell you based on your VIN number. To me this sounds like a problem with your vehicle and not a design issue which gives me hope to find a solution.

1 of 1 people found this helpful.
30

I think this will help shed some light on gas mileage for the Astro vans.I Bought my 2002 Astro van in 2007 with 45000 miles and great shape. The van now has 248,000 miles and the fuel mileage has fallen off in the past year. 12-14 on the highway and about 10 MPG in the city. I drive A LOT of highway miles towing a small 5 X 8 trailer. Towing i am getting about 9-10 mpg.My gas mileage was 17-19 on the highway, 12- 14 in the city. I have replaced the tires 3times - the original tires were P215/75R15. I replaced the tires 2 time with P225/70R15 for a better ride and appearance. my gas mileage stayed 17-19 and 12-14 hwy/city. The 3 rd time i replaced the tires I bought tires on sale for a great deal. they were 235/75R15 all terrain tires. My gas mileage dropped to 11 on the highway and 8 when i was towing a trailer. additionally the transmission shifted back and forth from OD to 3rd and i notice the engine labored a lot more due the additional size of the tires. Thankfully the tire shop allowed my to exchange the tires for a different tire. the replacement tires are P225/78R15. I think this explains why my gas mileage has dropped to what it is now. My next tires will be P225/70R15 and hopefully the gas mileage will go back to normal.Sorry this is so lengthy but i wanted to explain my point and what I have experienced.

3 of 3 people found this helpful.

Your Answer

Add photo

Related Questions

  • 2003 Astro Poor Gas Mileage 3 answers

    I recently purchased a 2003 Astro 2WD with 65,000 miles. This is my 5th Astro; all with 3.42 rear non-posi-traction differentials. Each of my previous Astros have averaged 18-19.5 mpg on the highway a...

    2003 Chevrolet Astro 2WD

    -

    Maintenance & Repair

  • Astro 2003 cap and rotor 2 answers

    I want to replace my cap and rotor on my 2003 astro. The videos I see show them pulling out the whole shaft on the distributor and going through a lot of trouble to set the engine at top dead cente...

    2003 Chevrolet Astro 2WD

    -

    Maintenance & Repair

  • how to fix a chevy astro third brake light leak 2 answers

    Chevy Astro third brake light (roof mount) leaks during rain.

    2000 Chevrolet Astro Passenger Van Extended

    -

    Maintenance & Repair

  • Astro van tune up

    I have a 1996 astro van runing rough ive put new fuel pump aldnator plugs wires made it run beter for lilbit thin stared backfireing runing like crap bad as it ever has.it will go. But no power HEL...

    1996 Chevrolet Astro LS Passenger Van Extended

    -

    Maintenance & Repair

  • Rear door latch on 95 Astro 2 answers

    The rear door latch on my 95 Astro appears to be frozen in the closed position although the door is open, so I can't completely shut the rear doors or hatch. Is there some way to free up the latch so...

    1995 Chevrolet Astro

    -

    Maintenance & Repair

Astro

Looking for a Used Astro in your area?

CarGurus has 197 nationwide Astro listings starting at $1,300.

ZIP:

Search Chevrolet Astro Questions

Chevrolet Astro Experts

#1 celica_gt_pimp
celica_gt_pimp
Reputation 330
#2 Tom Demyan
Tom Demyan
Reputation 320
#3 John Saffrahn
John Saffrahn
Reputation 280
View All

Related Models For Sale

Used GMC Safari
112 listings starting at $1,995
Used Chevrolet Astro Cargo Van
135 listings starting at $2,900
Used Chevrolet Express
38 Great Deals out of 5,206 listings starting at $1,335
Used Chevrolet Express Cargo
67 Great Deals out of 12,017 listings starting at $2,500
Used GMC Savana
4 Great Deals out of 1,279 listings starting at $2,000
Used Chevrolet Silverado 1500
1,772 Great Deals out of 181,204 listings starting at $250
Used Chevrolet Tahoe
557 Great Deals out of 31,373 listings starting at $1,500
Used Toyota Sienna
226 Great Deals out of 29,672 listings starting at $1,495
Used Chevrolet Suburban
301 Great Deals out of 19,514 listings starting at $1,800
Used Ford E-Series Cargo
73 Great Deals out of 3,080 listings starting at $2,200
Used Ford F-150
2,059 Great Deals out of 207,350 listings starting at $1,499
Used Dodge Ram Van
118 listings starting at $2,195
Used Honda Odyssey
212 Great Deals out of 20,912 listings starting at $1,900
Used GMC Safari Cargo
40 listings starting at $4,995
Used Chevrolet Camaro
245 Great Deals out of 31,195 listings starting at $369

Used Cars For Sale

2004 Chevrolet Astro 2WD For Sale
1 listings starting at $1,600

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.