2000 ssei gas mileage - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


2000-2005 Discuss your 2000-2005 Bonneville SE, SLE, and SSEi Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 11-17-2003, 06:42 PM   #1
Junior Member
Thread Starter
 
Join Date: Apr 2003
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
gsamosuk is on a distinguished road
Default 2000 ssei gas mileage

can anybody help me i get about 18 to 19 mpg at best, and that is mostly highway driving. is the onboard computer acurate?
gsamosuk is offline   Reply With Quote
Old 11-17-2003, 07:05 PM   #2
Senior Member
True Car Nut
 
Join Date: Jul 2003
Location: Westerville, Ohio 2000 Black SSEi
Posts: 6,127
Thanks: 0
Thanked 0 Times in 0 Posts
Rogue is on a distinguished road
Default

Check your o2 sensor. Do you have access to an autotap or someone with one?
Rogue is offline   Reply With Quote
Old 11-17-2003, 11:07 PM   #3
Junior Member
 
Join Date: Jun 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
2000SilverBullet is on a distinguished road
Default

Your mileage will vary drastically depending on your driving style and driving time duration.
Sure these cars can achieve over 30 mpg on the highway driven steady state with no accel or decel but in real world driving with relatively short 1/2 hr trips or with some idling at stops, that mileage can drop to 15 mpg.

I usually average 15 mpg in town but have dropped as low as 12 mpg. Steady state in town driving, I can get 26 mpg. at a steady 40 mph.
2000SilverBullet is offline   Reply With Quote
Old 11-18-2003, 12:51 AM   #4
Senior Member
True Car Nut
 
Join Date: Jun 2003
Location: Purgatory
Posts: 6,313
Thanks: 0
Thanked 0 Times in 0 Posts
PontiacDad is on a distinguished road
Default

1 gallon= 4.546litres in canada
1 gallon=3.78litres in usa

I average around 26 miles per gallon with combined driving.
As much as 32 miles per gallon on trips with the cruise control

and yes those are canadian gallons
PontiacDad is offline   Reply With Quote
Old 11-18-2003, 01:22 AM   #5
Senior Member
Certified GM nut
 
Join Date: Jul 2003
Location: Chicagoland
Posts: 1,712
Thanks: 0
Thanked 0 Times in 0 Posts
TaylorD is on a distinguished road
Default

Well I'm heavy footed and make short trips on the highway everyday and my DIC says 16-17 mostly. Can get it up to 26-28 cruising on the highway though. But no fun with out accelerating, my highway trips average 17-18.
It'* not my o2 sensor either!
TaylorD is offline   Reply With Quote
Old 11-18-2003, 11:26 PM   #6
Junior Member
 
Join Date: Jun 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
2000SilverBullet is on a distinguished road
Default

Quote:
1 gallon= 4.546litres in canada
1 gallon=3.78litres in usa

I average around 26 miles per gallon with combined driving.
As much as 32 miles per gallon on trips with the cruise control

and yes those are canadian gallons
PontiacDad makes a good point but I would be willing to bet that the DIC reads mileage in Liters/100Km or miles/USgallons.

Yep I was right. 15 L/100KM = 15 mpg if I toggle the DIC English/Metric button.
But if you calculate 15 L/100 KM and convert it to miles/Cdngallon, you get 19 mpg.

In most industries, if not all, in Canada, we use USgallons because most of the equipment we buy from the US and the specs all quote USgallons.

I think I'll just stick to comparing in Metric units, that way we are all consistent, but remember all you other Canuks that if you use the DIC English units that it is in miles per USgallon.
2000SilverBullet is offline   Reply With Quote
Old 11-19-2003, 10:08 AM   #7
Senior Member
True Car Nut
 
Join Date: May 2003
Location: Holt, MI & Lima, OH
Posts: 3,022
Thanks: 0
Thanked 0 Times in 0 Posts
dbtk2 is on a distinguished road
Default

I would say that gas mileage is normal. These cars are heavy, big, and lets face it, they don't have the most efficient engines. The DIC in my moms SSEi has never been reset since we bought it new in 2000. The car now has 90,000 miles on it, and the DIC reads 20.8mpg. Most of the miles are highway miles, but when it does get city driving, it isn't nice city driving, we do beat on it a bit. But, I wouldn't even expect that gas mileage, because before the rockers the DIC was reading 1mpg lower. It is slowly but surely going up.

But if you do want good gas mileage I could help you out a bit. With the cruise set at 76mph in the GTP for 40 miles of highway, and 60 for 30 miles of country road with some WOT passing, and getting back up to the 60mph at WOT after stopping for stoplights (to teach the PCM a bit), the GTP averaged 37.2mpg. Now, that was on 100 or 104 octane race gas (i can't remember for sure), but it doesn't do much worse than that on pump gas. If we don't ever reset the DIC it seems to average right around 25mpg, and it is driven almost all city, and a lot of it with a heavy foot. Because of the freer flowing air intake and exhaust the engine is more efficient and therefore makes much more horsepower, and gets much better gas mileage.

So, the moral is, if you want to get good gas mileage, dump $10,000 into your engine, and you will, it will probably just take a while for the gas savings to make up for what you spent.
dbtk2 is offline   Reply With Quote
Old 11-20-2003, 01:51 AM   #8
Senior Member
Certified GM nut
 
Join Date: Jul 2003
Location: Chicagoland
Posts: 1,712
Thanks: 0
Thanked 0 Times in 0 Posts
TaylorD is on a distinguished road
Default

Quote:
Originally Posted by dbtk2
So, the moral is, if you want to get good gas mileage, dump $10,000 into your engine, and you will, it will probably just take a while for the gas savings to make up for what you spent.
I'm working on it! Mega Stereo went in first.
TaylorD is offline   Reply With Quote
Old 11-20-2003, 07:59 AM   #9
Senior Member
Posts like a Corvette
 
Join Date: Jan 2002
Location: Ontario
Posts: 1,253
Thanks: 0
Thanked 0 Times in 0 Posts
Tamara is on a distinguished road
Default

I do'nt think they are bad...I average about 750 km to a full tank. That'* about 469 miles.
Tamara is offline   Reply With Quote
Old 12-20-2003, 12:22 PM   #10
Senior Member
Posts like a Turbo
 
Join Date: Dec 2002
Location: Crystal Lake, IL
Posts: 327
Thanks: 0
Thanked 0 Times in 0 Posts
iRocco is on a distinguished road
Default

For the last couple of weeks while my car was being fixed, I was driving a 2003 DeVille with the northstar engine. The mileage on my Bonneville is averaging 16.5 mpg. The DeVille was showing 17.5. I thought that was odd, but I guess it makes sense. The Caddy has a multivalve v8, probably working less hard to pull that car around, even though its heavier.
iRocco is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
2000 silverado Z71 horrible gas mileage Owen2010 General GM Chat 20 02-16-2012 08:25 PM
2000 Bonneville SLE getting terrible gas mileage zachattack2795 2000-2005 9 05-22-2011 06:41 PM
Average Gas Mileage for 2000+ SSEi crowd blackbuick1987 2000-2005 26 08-09-2007 08:44 PM
Average Gas Mileage for 2000+ SE crowd jbmark33 2000-2005 12 08-03-2007 04:33 AM
Gas, Oil And Gas Mileage **** SERIES II ENGINES**** Nashville Cowboy General GM Chat 26 02-06-2007 06:23 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 12:12 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.