Go Back   986 Forum - The Community for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Boxster General Discussions

Post Reply
 
LinkBack Thread Tools Display Modes
Old 07-30-2011, 09:15 PM   #1
Registered User
 
Join Date: Mar 2008
Location: Texas
Posts: 23
Boxster MPG

So i am wondering what everyone gets MPG wise in their boxsters. I calculate mine when i fill my tank to full, number of gallons i put in, and divide the number of miles ive driven since last fill up by those gallons.


1999 2.5l 5-speed

My best mpg was 23
and my worst was 18
these are for nearly full tanks

i typically get 19-20 mpg anymore.
Am i getting low gas mileage? I drive very conservatively most of the time.
Any suggestions? maybe something isnt working right?

Also just curious what you guys are getting in various years and models
funlovinguy24 is offline   Reply With Quote
Old 07-30-2011, 09:23 PM   #2
Registered User
 
Join Date: Jul 2011
Location: niagara falls ont.
Posts: 19
2000 boxster 2.5.......consistantly at 20.1 mpg
appistappis is offline   Reply With Quote
Old 07-30-2011, 09:59 PM   #3
Registered User
 
Join Date: Jan 2010
Location: Redmond, Wa
Posts: 369
2000 Boxster base, 2.7L 76K miles
I'm checking my MPG just like you.. every time I fill up, I pull my phone to do the calculations
I was getting 16-18mpg, and I drive about 40/60 city/HWY.
For last 2 tanks I'm up to about 20mpg thanks to technotorque, but then again.. I cruise at over 3K rpms

Sasha
sasha055 is offline   Reply With Quote
Old 07-31-2011, 03:45 AM   #4
Registered User
 
tonycarreon's Avatar
 
Join Date: May 2009
Location: Frederick, MD
Posts: 1,396
on long trips (on the highway full time) i get 24, otherwise i get around 19 mixed driving (and i don't necessarily drive "conservatively," so punch it more... )
__________________
"Speed has never killed anyone, suddenly becoming stationary... that's what gets you."
tonycarreon is offline   Reply With Quote
Old 07-31-2011, 04:20 AM   #5
Registered User
 
Join Date: Jul 2009
Location: Arlington Heights, IL
Posts: 1,561
2006 Boxster S (pushing 43,000 miles now!)
Spirited country roads I get low-low 20's.
Highway cruising I get over 28.
I'm never in city stop & go traffic.
99.99% top down.
I exclusively purchase 93 octane without ethanol. Makes a HUGE difference.

Last edited by Flavor 987S; 08-01-2011 at 06:47 AM.
Flavor 987S is offline   Reply With Quote
Old 07-31-2011, 06:37 AM   #6
Registered User
 
Join Date: Jan 2007
Location: BC
Posts: 1,346
25 miles/US gal on highway driving, using 94 octane
__________________
2001 Boxster, 5 spd, Seal Grey
clickman is online now   Reply With Quote
Old 07-31-2011, 06:48 AM   #7
Registered User
 
Join Date: May 2011
Location: Maine, USA
Posts: 126
03 Boxster S

Best 26.8 highway
Overall, about 21
dmairspotter is offline   Reply With Quote
Old 07-31-2011, 07:31 AM   #8
Registered User
 
MN 986's Avatar
 
Join Date: May 2008
Location: MN
Posts: 327
Garage
According to my OBC hack, my 2002 2.7 averages 24-25mpg with mixed driving on most tanks. I have seen as low as 17mpg with harder driving and as high as 31mpg on long freeway trips. I always use premium but we also have a mandated 10% ethanol which is said to reduce mileage so my mileage could be even better.
MN 986 is offline   Reply With Quote
Old 07-31-2011, 08:51 AM   #9
Registered User
 
Join Date: Jul 2009
Location: Arlington Heights, IL
Posts: 1,561
Quote:
Originally Posted by MN 986
I always use premium but we also have a mandated 10% ethanol which is said to reduce mileage so my mileage could be even better.

There is a TON of ethanol free gas your great State of Minn. You just have to know where to look. IMHO, 91 pure gas is better than 93 with ethanol:

http://pure-gas.org/index.jsp?stateprov=MN
Flavor 987S is offline   Reply With Quote
Old 07-31-2011, 03:58 PM   #10
Porsche "Purist"
 
Paul's Avatar
 
Join Date: Aug 2003
Location: Wisconsin
Posts: 2,123
Garage
2001, 28 highway, 21 around town, I like to floor it often. 93 Octane BP with 10% ethanol.
__________________
1998 Boxster with 7.8 DME, 2005 3.6 liter/325 hp, Variocam Plus, 996 Instrument panel
2001 Boxster original owner. I installed used motor at 89k.
1987 924S. 2002 996TT. PST-2
Owned and repaired Porsches since 1974. Porsche: It's not driving, it's therapy.
Paul is offline   Reply With Quote
Old 07-31-2011, 04:57 PM   #11
Registered User
 
Join Date: Nov 2006
Location: bloomington, in
Posts: 56
top down, highway @ 70mph.ish 25mpg
top up, highway @ 70mph.ish 28mpg
around town and what not, 21mpg

2001 boxster s 6-speed
matty-matt is offline   Reply With Quote
Old 08-01-2011, 04:02 PM   #12
Registered User
 
DenverSteve's Avatar
 
Join Date: Jul 2011
Location: Denver/Winter Park, CO USA
Posts: 600
My combined city and mountain driving nets 26 - 28.6 MPG. It doesn't matter if I'm kickin' it in the mountains at 90+ or keeping it "legit" around 65-75. Great car with great mileage.
__________________
Denver Steve
Carrera, Cabriolet, 6-Speed, Black/Tan

Last edited by DenverSteve; 08-02-2011 at 06:32 PM.
DenverSteve is offline   Reply With Quote
Old 08-02-2011, 03:58 PM   #13
Registered User
 
Dave S.'s Avatar
 
Join Date: Oct 2008
Location: Colorado
Posts: 317
I've checked the mileage on my 03 Boxster S several times and always am right around 27 mpg, virtually all highway driving since I live in the country. Doesn't seem to matter that much if I drive it like I stole it, or just putt around, always right near 27 mpg.
__________________
Dave S.
2003 Boxster S
Dave S. is offline   Reply With Quote
Old 08-02-2011, 04:47 PM   #14
Registered User
 
Join Date: Jan 2010
Location: Orlando
Posts: 290
According to the car, I get 18.7. That is the average over the last few months.

I haven't done the calculations myself.
Highlow is offline   Reply With Quote
Post Reply



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 On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -8. The time now is 06:56 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2025 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page