Go Back   EcoModder Forum > EcoModding > EcoModding Central
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 05-02-2018, 04:39 PM   #1 (permalink)
Master EcoModder
 
Join Date: Jan 2017
Location: Istanbul
Posts: 775
Thanks: 42
Thanked 81 Times in 67 Posts
Efficient car for higher speed cruising

What type of car would be efficient for high speed cruising, say 100mph, 160 km/h.

I know this is not entirely in the spirits of ecomodding/driving but sometimes it is just more economical to go fast. For example if you are many people in the car. Or in my case, if I can go fast and avoid rush hour traffic I can see a significant gain in mpg. Getting stuck in traffic sucks. And mpg goes up. (I once got 43l/100km. Going up hill for 2 hours at 3km/h) I could have walked that distance significantly faster. (I have started to bike to one of my workplaces 20-km one way 40 km round trip)
Sometimes blasting on the highway to go through a densely populated area at traffic free is an fe plus.

So, what would be a good candidate? A vw polo or a Passat variant have the same cdA of 0.66 so in this respect would they both get the same FE?

Aero mods would provide a significant advantage, also a gear swap if possible would make the most obvious advantages in my opinion.


Last edited by teoman; 05-02-2018 at 05:16 PM..
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 05-02-2018, 05:19 PM   #2 (permalink)
EcoModding Newb
 
redpoint5's Avatar
 
Join Date: Aug 2010
Location: Oregon
Posts: 4,459

Acura TSX - '06 Acura TSX
90 day: 28.24 mpg (US)

Lafawnda - '01 Honda CBR600 F4i
90 day: 47.32 mpg (US)

Big Yeller - '98 Dodge Ram 2500 base
90 day: 21.82 mpg (US)

Prius Plug-in - '12 Toyota Prius Plug-in
90 day: 79.06 mpg (US)

Mazda CX-5 - '17 Mazda CX-5 Touring
90 day: 29.67 mpg (US)
Thanks: 1,671
Thanked 1,448 Times in 1,011 Posts
Perhaps a motorcycle.

The Prius has a very low Cd and a variable gear ratio, so that would be my candidate in a car. If 2 seats were acceptable, the first gen Insight.

Generally any car that gets good efficiency at lower speeds will tend to outperform other cars at higher speeds.

No sense in making a purchasing decision based on this though unless driving 100 MPH is regularly done, in which case, I would buy something with a high safety rating.
__________________
Gas and Electric Vehicle Cost of Ownership Calculator







Give me absolute safety, or give me death!
  Reply With Quote
Old 05-02-2018, 06:37 PM   #3 (permalink)
Master EcoModder
 
Join Date: Jan 2017
Location: Istanbul
Posts: 775
Thanks: 42
Thanked 81 Times in 67 Posts
I do ride a motorbike aswell. I have 3 of them. Unfortunately its not that easy to fit 3 people on one.
  Reply With Quote
Old 05-03-2018, 01:59 AM   #4 (permalink)
Luddite
 
deluxx's Avatar
 
Join Date: Apr 2018
Location: Baltimore
Posts: 73

4C4D5M1.6LX - '96 Honda Civic LX
90 day: 46.01 mpg (US)
Thanks: 47
Thanked 17 Times in 15 Posts
If I had such a luxury I would acquire a Volvo V70. Very safe, powerful, large, and fairly economical.it's a really nice car and I'll probably buy one one day. (Its on my car bucket list)
Around here a perfect condition V70 can be had for $5k-$8k.
  Reply With Quote
Old 05-03-2018, 02:37 AM   #5 (permalink)
Master EcoModder
 
Join Date: Feb 2014
Location: Missoula, MT
Posts: 1,431
Thanks: 96
Thanked 471 Times in 318 Posts
I think a C class Benz with the 2.2 diesel would be the best, they even make a hybrid version. .24 Cd, not huge, don't know what the cdA is but must be pretty good with that .24 Cd.
  Reply With Quote
Old 05-03-2018, 04:55 AM   #6 (permalink)
Master EcoModder
 
Join Date: Oct 2009
Location: Fort Worth, Texas
Posts: 1,986

2004 CTD - '04 DODGE RAM 2500 SLT
Team Cummins
90 day: 19.36 mpg (US)
Thanks: 984
Thanked 521 Times in 396 Posts
You’ll subject the vehicle to a wear-rate not offset by putative fuel savings.
__________________
2004.0 DODGE Ram QC/LB 2500 2WD/NV-5600 305/555 ISB. 7,940-lb. Stock. 200,000 miles/5000-hrs @ 40-mph average.
1990 35' Silver Streak TT 7,900-lb.
11-cpm solo & 19-cpm towing; 21-mpg average past 54k-miles
Sold: 1983 Silver Streak 3411
  Reply With Quote
Old 05-03-2018, 07:24 AM   #7 (permalink)
Master EcoModder
 
Join Date: Jun 2016
Location: WV
Posts: 761

IGL - '04 Saturn Ion
Team Saturn
90 day: 48.72 mpg (US)
Thanks: 24
Thanked 176 Times in 140 Posts
While it would not be ideal for the car to cruise at 100+mph (my Saturn gives me around 19mpg at that speed here in WV), you’d be best off with a diesel car(WV/Audi) that’s been streamlined as best as you can manage
__________________
My current Ecotec project...


My last Ecotec project...
  Reply With Quote
Old 05-03-2018, 08:14 AM   #8 (permalink)
Master EcoModder
 
Ecky's Avatar
 
Join Date: Dec 2011
Location: Vermont
Posts: 2,835

Gaptooth - '00 Honda Insight
Team Honda
Gen-1 Insights
90 day: 62.98 mpg (US)

Such Fit - '07 Honda Fit Sport
90 day: 41.27 mpg (US)

Velomobile - '13 Sun Seeker EZ-TAD SX
Last 3: 2142.86 mpg (US)
Thanks: 982
Thanked 1,083 Times in 687 Posts
Mercedes tends to have very low drag ratings on their cars. I'd probably avoid VW/Audi over reliability concerns. Given the choice, I'd pick a diesel over a gasser.

Other than that, look at Toyota's and Honda's hybrids, they have lower drag and this would slip through the air more easily.
  Reply With Quote
Old 05-03-2018, 10:16 AM   #9 (permalink)
Master EcoModder
 
Join Date: Jun 2016
Location: WV
Posts: 761

IGL - '04 Saturn Ion
Team Saturn
90 day: 48.72 mpg (US)
Thanks: 24
Thanked 176 Times in 140 Posts
I wonder if a streamlined C7 Corvette would do well enough cruising at 100? It might look weird with smooth wheel covers and grille blocking but I could imagine maybe 25mpg
__________________
My current Ecotec project...


My last Ecotec project...
  Reply With Quote
Old 05-03-2018, 03:00 PM   #10 (permalink)
Gen 1 Insight Hunter
 
mpg_numbers_guy's Avatar
 
Join Date: Feb 2018
Location: Virginia
Posts: 454

Silver Aero (Personal Driving) - '04 Honda Civic EX Sedan Automatic
Team Honda
90 day: 50.98 mpg (US)

Silver Aero (Pizza Delivery) - '04 Honda Civic EX Sedan Automatic
90 day: 37.58 mpg (US)
Thanks: 146
Thanked 81 Times in 70 Posts
I read somewhere that the 7th gen Civic gets 18 mpg with cruise control set at 110 mph. And that's with the stock drag coefficient. Not sure if it was manual vs. automatic or coupe vs. sedan.

__________________
Silver Aero, 2004 Honda Civic EX Sedan Automatic.
Personal driving:

Pizza delivery:


Averaged 32 MPG driving since totaled '04 Toyota Sienna (90% highway).
  Reply With Quote
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2018, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com