poor fuel economy. Dieselgate.

Iain G Wood said:

That in my opinion that is low was just considering that your average temp must be around 20 C on a poor day My GLC22d returns around 42 MPG Imperial North east of Scotland. I would have a word with the dealer, my other question has the fuel companies been faffing around with the diesel speck. This happened in the UK with the Agri Diesel and caused all sort of problems they had increased the % of Bio, the usual results did nothing for the farming industry but the lawyers did all right.
I did not join the class action because my Mercedes is Euro 6 ie has add blue.
temps in northern Scotland ranges from 6 C to a very hot summer's day 24 C.

Iain

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Iain G Wood said:

That in my opinion that is low was just considering that your average temp must be around 20 C on a poor day My GLC22d returns around 42 MPG Imperial North east of Scotland. I would have a word with the dealer, my other question has the fuel companies been faffing around with the diesel speck. This happened in the UK with the Agri Diesel and caused all sort of problems they had increased the % of Bio, the usual results did nothing for the farming industry but the lawyers did all right.
I did not join the class action because my Mercedes is Euro 6 ie has add blue.
temps in northern Scotland ranges from 6 C to a very hot summer's day 24 C.

Iain

Click to expand...

Aussie Dave said:

Hi
I have 250D (2017) and my fuel consumption says usually 5.5 litres per 100 kilometers, I seldom race around usually freeway driving
I have oddly noticed the car more fuel efficient when the aircon is on than with windows down

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Which is the Most Fuel Efficient, Air Con or Open Window?

Many people love to drive with the window down and breeze in their hair, but is it better for your wallet to close up the windows and switch on the air con?

www.speedhumpsaustralia.com.au

What's More Fuel-Efficient: AC or Windows Down?

It’s a summertime debate that’s been brewing since the invention of the air conditioner. What’s a more efficient use of fuel—driving with the windows down or with the A/C on?

www.cenex.com

T-star said:

Hi All,
Late last year I took my GLC250D into a Mercedes dealership in Brisbane for a brake and disc change. While the dealer had the car they decided to perform an ECU software update as part of a recall. After taking back take the car, I noticed the fuel economy was poorer. Before the software update I was consistently achieving 7.5L/100km around the city. Now, its hard to get anything less than 9.5L/100km even if with the most efficient driving. In addition there is an increase in the usage of the Adblue.

Its now just over a year since the ECU software update and I am still only getting the mid 9s/100km. I am wondering how many other GLC owners in Australia have had their ECU updated by the factory and are experiencing similar worse fuel economy.

I have read there a number of class action in the UK against Mercedes for this software update. I am wondering there is anything similar being done in Australia. Or what other options we have for a fix.

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