Go Back   Club Lexus Forums > Lexus Model Forums > CT 200h Model
Sign in using an external account
Register Forgot Password?

Real World MPG???

Reply
 
 
 
 
Thread Tools Search this Thread Display Modes
Old 03-20-11, 07:21 AM   #16
Bob259
Driver
Trader Score: (0)
 
Bob259's Avatar
 
Join Date: Jan 2011
Location: Phoenix, AZ
Posts: 185
Default

Second fill up, gas sale day so I topped it off...

Well.... 38 MPG week before last and last week (just filled up) 36 MPG (I always pack the tank, but at first click off and round up to even cents showed it to be 38.9 MPG). However that is about what I expected, most my trips are under 10 miles and this week the mornings were in the low 20's so I don't even get the Synergy Drive warmed up to operating temp before I stop. The week before I had a few more hghway miles on then this last week. Ethanol blend, cold temps and short hilly trips are killers for MPG.. the wifes Prius is in the low to mid 40's right now and she was at 50+ MPG during the warmer weather.

The ethanol blend killed my mileage in the Highlander Hybrid to the tune of 3-6 MPG depending on the weather and trip length (I track every tank on every car I've owned and you can see it in the numbers immediately drop when they switched to the ethanol blend here).

All ethanol does for gas is make you use more (meaning more tax revenue for the Fed and State governments), raise food prices due to selling crops for fuel Vs food and is worse for the enviroment. But the major driver for this push I'm sure is TAX REVENUE.... Wait till all we can get is E15, not only will it ruin your vehicle but your lawn equipment, boat motors etc... Already hearing stories from the boat mechanices and small engine guys on this.

This is one of the biggest boon doggles on the American Public ever commited
This ad is not displayed to registered members.
Register your free account today and become a member on Club Lexus!
__________________

CT200h - Premium
Tungsten Pearl
Black Leather
LED HL
NAV

Batteries included
Bob259 is offline   Reply With Quote
Old 03-20-11, 08:51 AM   #17
QuentinB
Driver
Trader Score: (0)
 
Join Date: Feb 2010
Location: WV
Posts: 100
Default

Yeah, ethanol is a load of bull****. Terrible stuff. I've actually seen where it will break down the plastic components in fuel systems and leave a goo in the injector nozzles.
QuentinB is offline   Reply With Quote
Old 03-20-11, 08:56 AM   #18
yellowgts
Driver School Candidate
Trader Score: (0)
 
Join Date: Mar 2011
Location: AB
Posts: 6
Default

Do you routinely use premium, or use a lower grade to receive these fuel economy figures?
yellowgts is offline   Reply With Quote
Old 03-20-11, 09:00 AM   #19
Bob259
Driver
Trader Score: (0)
 
Bob259's Avatar
 
Join Date: Jan 2011
Location: Phoenix, AZ
Posts: 185
Default

Quote:
Originally Posted by yellowgts View Post
Do you routinely use premium, or use a lower grade to receive these fuel economy figures?
Just using regular fuel. I know it would be a little better with Premum.
__________________

CT200h - Premium
Tungsten Pearl
Black Leather
LED HL
NAV

Batteries included
Bob259 is offline   Reply With Quote
Old 03-20-11, 09:28 AM   #20
dgstan
Rookie
Trader Score: (0)
 
Join Date: Feb 2011
Posts: 56
Default

Quote:
Originally Posted by Bob259 View Post
Just using regular fuel. I know it would be a little better with Premum.
The car is designed to run on regular. I don't think putting premium in it would be a good idea.
dgstan is offline   Reply With Quote
Old 03-20-11, 12:36 PM   #21
cenix
Driver
Trader Score: (0)
 
cenix's Avatar
 
Join Date: Mar 2011
Location: CA
Posts: 171
Default

Quote:
Originally Posted by dgstan View Post
The car is designed to run on regular. I don't think putting premium in it would be a good idea.
the manual states 87 or higher, so 87 is the bare minimum. what exactly might make it a bad idea to put in a higher octane?

for my real world figures (mileage divided by gallons of gas put into tank), my last tank i got 48 mpg city/highway. this tank i'm doing a little better, hovering on 49-50. this is all done on normal mode. i'm going to try doing all sport mode to see what the differential is later on. this car is getting better than 42 mpg for sure.
cenix is offline   Reply With Quote
Old 03-20-11, 02:36 PM   #22
dgstan
Rookie
Trader Score: (0)
 
Join Date: Feb 2011
Posts: 56
Default

Quote:
Originally Posted by cenix View Post
the manual states 87 or higher, so 87 is the bare minimum. what exactly might make it a bad idea to put in a higher octane?
I'm just going off what the Prius requires. They explicitly say to not use premium.
dgstan is offline   Reply With Quote
Old 03-20-11, 04:28 PM   #23
cenix
Driver
Trader Score: (0)
 
cenix's Avatar
 
Join Date: Mar 2011
Location: CA
Posts: 171
Default

^ very interesting.
cenix is offline   Reply With Quote
Old 03-20-11, 06:07 PM   #24
dgstan
Rookie
Trader Score: (0)
 
Join Date: Feb 2011
Posts: 56
Default

Quote:
Originally Posted by cenix View Post
^ very interesting.
IIRC, it has something to do with the tuning of the Atkinson cycle engine. Of course, my recollection is several years old.
dgstan is offline   Reply With Quote
Old 03-22-11, 12:51 AM   #25
flipside909
Lexus Connoisseur
Trader Score: (0)
 
flipside909's Avatar
 
Join Date: Mar 2001
Location: L(F)A, California
Posts: 19,133
KaizenFactor kaizenfactor kaizenfactor
Default

Quote:
Originally Posted by cenix View Post
the manual states 87 or higher, so 87 is the bare minimum. what exactly might make it a bad idea to put in a higher octane?

for my real world figures (mileage divided by gallons of gas put into tank), my last tank i got 48 mpg city/highway. this tank i'm doing a little better, hovering on 49-50. this is all done on normal mode. i'm going to try doing all sport mode to see what the differential is later on. this car is getting better than 42 mpg for sure.
The manual states that 87 octane is recommended, but you can use anything higher than 87 if regular is not available. Its not bad to use higher octane for your CT, but the car gets no extra benefit of using higher octane fuels unlike something high performance/high compression like the V8 in the IS F or the V10 in the LFA. You're wasting your money by putting premium in the CT.

As your CT gets past the "break-in period", your mileage will be a lot more consistent overtime.
__________________
AMAZING IN MOTION

Toyota, Lexus, Scion Connoisseur
flipside909 is offline   Reply With Quote
Old 03-22-11, 09:26 AM   #26
cenix
Driver
Trader Score: (0)
 
cenix's Avatar
 
Join Date: Mar 2011
Location: CA
Posts: 171
Default

Quote:
Originally Posted by flipside909 View Post
The manual states that 87 octane is recommended, but you can use anything higher than 87 if regular is not available.
not trying to be argumentative, but i don't see it anywhere in the manual that states 87 octane is "recommended." can you show me where it states that? (i need empirical evidence to make me feel better ) page 653 of the manual states "87 or higher."

my personal conclusion to this statement from the manual is that 87 octane would be the bare minimum to control/prevent knock and possibly a higher octane would allow the ecu to maximize ignition/air flow/fuel maps to extract a little extra power from the motor. i understand the compression ratio of 13:1 is a mechanical ratio, with the effective compression ratio being lower of course due to the atkinson cycle motor characteristics. (which by the way, anyone know what the effective compression ratio is on the ct200h?).

i'm sure the price differential in gasoline is not warranted for any 'power' that may be found by using higher octane but might it be better for the 'health' of the motor? maybe, maybe not since the ecu would account for any knocking. i'm just typing as i think, so perhaps someone else can chime in and share some knowledge about the ct200h?

cenix is offline   Reply With Quote
Old 03-22-11, 01:59 PM   #27
spwolf
Lexus Fanatic
Trader Score: (0)
 
Join Date: Jan 2005
Posts: 15,845
Default

engine is designed for 87, so putting anything over will not do anything at all.

now, if engine is designed for premium, thats something else, as then it will knock and at that point, ecu will retard the timing to prevent knocking.
__________________
- 07 Lexus GS350 AWD
spwolf is online now   Reply With Quote
Old 03-22-11, 04:04 PM   #28
dochusar
Pole Position
Trader Score: (0)
 
dochusar's Avatar
 
Join Date: Mar 2011
Location: NJ
Posts: 266
Walter G. Husar dochusar dochusar
Default

Just wanted to share, picked-up my car from dealer on Friday. On Saturday, topped off the tank and then took about a 150 mile trip to visit family. Topped off the tank after getting home. The trip was mostly highway going 70 mph for about 70% of the time and 60 mph for about 30%. The terrain was flat for about 35% and hilly for 65%. The average mpg calculated by hand not computer was 45.89, the onboard computer had the trip at 47.1 --- just as advertised.
dochusar is offline   Reply With Quote
Old 03-26-11, 04:26 AM   #29
jimmyc13
Pole Position
Trader Score: (0)
 
Join Date: Mar 2011
Location: MA
Posts: 336
Default

Quote:
Originally Posted by dochusar View Post
Just wanted to share, picked-up my car from dealer on Friday. On Saturday, topped off the tank and then took about a 150 mile trip to visit family. Topped off the tank after getting home. The trip was mostly highway going 70 mph for about 70% of the time and 60 mph for about 30%. The terrain was flat for about 35% and hilly for 65%. The average mpg calculated by hand not computer was 45.89, the onboard computer had the trip at 47.1 --- just as advertised.
That's great info., thanks for sharing! I love that people are getting above& beyond what the sticker says What year did the EPA start changing the methods used to calculate average MPG? I'm glad it's much more realistic now vs. when I bought my car in '04, where the numbers are much lower in real life.
jimmyc13 is offline   Reply With Quote
Old 03-26-11, 12:07 PM   #30
QuentinB
Driver
Trader Score: (0)
 
Join Date: Feb 2010
Location: WV
Posts: 100
Default

Quote:
Originally Posted by dochusar View Post
Just wanted to share, picked-up my car from dealer on Friday. On Saturday, topped off the tank and then took about a 150 mile trip to visit family. Topped off the tank after getting home. The trip was mostly highway going 70 mph for about 70% of the time and 60 mph for about 30%. The terrain was flat for about 35% and hilly for 65%. The average mpg calculated by hand not computer was 45.89, the onboard computer had the trip at 47.1 --- just as advertised.
Great info! It will be great taking a weekend to my parents' for $35 instead of $70.
QuentinB is offline   Reply With Quote
Old 03-26-11, 12:07 PM
 
 
 
 
Reply

Tags
200, 2006, 200h, average, ct, ct200h, forum, hybrid, is350, lexus, mileage, mpg, real, sonata, world

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
First Drive: 2015 Hyundai Sonata Hoovey2411 Car Chat 47 07-10-14 03:50 PM
Looking into GSs. 450h most, but have questions. Help Appreciated :) ndubs77 GS - Third Generation 4 12-05-13 02:42 PM
Review: 2013 Ford C-Max Hybrid Hoovey2411 Car Chat 27 05-17-13 07:07 AM
Review: 2013 Ford Fusion Hybrid Hoovey2411 Car Chat 6 04-02-13 11:42 AM
My goal: 30 MPG average/month judoflip Hybrid Technology 13 01-27-13 03:35 PM

All times are GMT -7. The time now is 05:08 AM.

Join ClubLexus
Advertising


Copyright © 2000-2008 Internet Brands, Inc. All Rights Reserved
Privacy Policy | Disclaimer | Terms of Use | JOBS


Get all contact info