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New MPG tests on the way - WLTC

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Old 04-18-2012, 02:14 PM
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New MPG tests on the way - WLTC

Discussions on drawing up a new system to test cars fuel economy are now underway.

http://www.cleanmpg.com/photos/data/501/2012_Ford_Focus_ECOnetic.jpg
FRV - CleanMPG - April 18, 2012

Will the 67.2 mpgUS combined rated (on the NEDC) European Focus Econetic still break 60 mpgUS on the new test cycles?

It will be called the Worldwide Light-duty Test Cycle (WLTC).

The plan is a joint venture between the EC and the UN and they are hoping to create a global standard for measuring FE and emissions. They also want to say how diesel particulates are measured and to quantify energy consumption of PHEV's and EV's.

It looks like the WLTC would apply across Europe and the US but also in the Far East (Japan, China, India and S. Korea). The thinking behind it is there are many different systems for testing and measuring vehicles across the world, it would make sense to harmonise as many as possible.

Apparently one idea is to create two FE figures for every new car to a best and worst number. The best would be with all systems like AC turned off and the worst would be fully loaded with all systems on. This seems quite different to the current US EPA numbers and the NEDC Urban/Extra-urban/Combined system (which for most 'normal' drivers is unobtainable!).

Watch this space although it may be a long wait, the review won't be completed until 2014 and we'll probably have to wait 3+ years for them to be put into action.
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Old 04-18-2012, 02:31 PM
50 mpg by 2012 50 mpg by 2012 is offline
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Re: New MPG tests on the way - WLTC

Sounds like a WINNER to me!!

The OEMs should like one certification for ALL markets ... a definite savings of time, money, and manpower.

This strategy would still apparently allow unique regional geo-political regulatory limits for mpg or CO2.

Very interesting ...

Last edited by 50 mpg by 2012 : 04-18-2012 at 02:41 PM.
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Old 04-18-2012, 03:06 PM
herm herm is offline
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Re: New MPG tests on the way - WLTC

Would it mean that we could import any european or canadian car into the US?.. heck no
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Old 04-18-2012, 04:33 PM
WriConsult WriConsult is offline
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Re: New MPG tests on the way - WLTC

No, this wouldn't get rid of the varying safety, emissions and instrumentation regulations that prevent automobiles from being a global market, but it would at least give us a common standard for measuring fuel economy.

As it is, if you take l/100km numbers published in Japan, NEDC numbers, British mpgI numbers and convert them to mpgUS, they don't align AT ALL with the EPA numbers because the tests are so different. A global standard for testing fuel economy would be great, though it needs to take into account that driving conditions vary widely across the globe. In some Asian and European cities the stop-and-go city driving can make American "city" driving look like steady-state cruising in comparison.
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Old 04-18-2012, 06:31 PM
ItsNotAboutTheMoney ItsNotAboutTheMoney is offline
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Re: New MPG tests on the way - WLTC

Quote:
Originally Posted by WriConsult View Post
No, this wouldn't get rid of the varying safety, emissions and instrumentation regulations that prevent automobiles from being a global market, but it would at least give us a common standard for measuring fuel economy.

As it is, if you take l/100km numbers published in Japan, NEDC numbers, British mpgI numbers and convert them to mpgUS, they don't align AT ALL with the EPA numbers because the tests are so different. A global standard for testing fuel economy would be great, though it needs to take into account that driving conditions vary widely across the globe. In some Asian and European cities the stop-and-go city driving can make American "city" driving look like steady-state cruising in comparison.
Actually, that's what is attempting to do: combine cycles from different countries. I'm sure the hope is that even if different countries have different safety standards and emissions standards, standardized test cycles would make the engineering easier.
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Old 04-20-2012, 01:04 PM
chucky2 chucky2 is offline
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Re: New MPG tests on the way - WLTC

I'd like to see, instead of a two or three number system, a 5 or 6 number system instead. Ideally the customer would have data for each of the major driving types on the window sticker, so they could actually make an informed decision (the whole point of the window sticker in the first place).

Heavy City (congested Stop and Go)
Light City (free flowing with frequent Stop and Go)
Heavy Suburban (congested traffic, low/mid sustained cruze)
Light Suburban (free flowing traffic, low/mid sustained cruze)
Highway (70 mph sustained)

Let the people be aware that their F250 they just have to have is going to get 4 mpg in their daily commute in. Until they get the harsh reality numbers they will not change their purchasing habits.

Chuck
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