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Joined: Jun 2015
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Talk Morgan Expert
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Originally Posted by Derek596
As I drive my auto like 'Miss Daisy', I am getting well over 50 mpg and about 300 miles per tank. A word of warning; the fuel consumption meter overreads by at least 10%. My fuel calculations come from filling to the brim and checking miles done since last fill. I rarely drive over 60 mph. Moreover, in response to CooperMan's comment about range anxiety, I have no worries and, unlike charging an EV, we can fill our fuel tanks in 5 minutes. My chum in his Porsche Taycan takes one hour; assuming he can find a charging point available.

This is all assuming the odometer is reading accurately of course. if the fuel consumption meter is apparently incorrect, it could be getting duff inputs on mileage travelled, which in turn of course could also affect your own calculations.


Doug
2011 Plus 4 in Rich Maroon

1972 750 “ComDom” sprinter
1958 Triton 650
1992 Triumph Trophy 900
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Just Getting Started
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Originally Posted by Deejay
Originally Posted by Derek596
As I drive my auto like 'Miss Daisy', I am getting well over 50 mpg and about 300 miles per tank. A word of warning; the fuel consumption meter overreads by at least 10%. My fuel calculations come from filling to the brim and checking miles done since last fill. I rarely drive over 60 mph. Moreover, in response to CooperMan's comment about range anxiety, I have no worries and, unlike charging an EV, we can fill our fuel tanks in 5 minutes. My chum in his Porsche Taycan takes one hour; assuming he can find a charging point available.

This is all assuming the odometer is reading accurately of course. if the fuel consumption meter is apparently incorrect, it could be getting duff inputs on mileage travelled, which in turn of course could also affect your own calculations.


My speedometer and odometer is correct against GPS!

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Slight Drift Warning....

I have recently changed to buying Esso Premium unleaded. Why? The pump is labelled E5, BUT according to the ESSO web site:

"Although our pumps have E5 labels on them, our Synergy Supreme+ 99 is actually ethanol free (except, due to technical supply reasons, in Devon, Cornwall, North Wales, North England and Scotland). Legislation requires us to place these E5 labels on pumps that dispense unleaded petrol with ‘up to 5% ethanol’, including those that contain no ethanol, which is why we display them on our Synergy Supreme+ 99 pumps."

https://www.esso.co.uk/en-gb/fuels/petrol

I have noticed an improvement in MPG, by about 10%. The cars seem to be running better, too. I know Morgan cars do not need 99 Octane fuel, but if there is an ESSO station near you it may be worth a try.


Peter,
66, 2016 Porsche Boxster S
No longer driving Tarka, the 2014 Plus 8...

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I recorded this a while ago Peter when I had to use BP. The pump said E10, but the mpg was significantly better. Since then I've used BP E5 and Esso E5 with the same result. I normally use Shell E5.


DaveW
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Talk Morgan Expert
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I have long used Esso for the same reasons. Also at my local Esso, I can trade 300 Nectar points for 5p/litre money off, which is profitable as long as I buy over 30 litres.


Doug
2011 Plus 4 in Rich Maroon

1972 750 “ComDom” sprinter
1958 Triton 650
1992 Triumph Trophy 900
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Talk Morgan Expert
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Originally Posted by Derek596
Originally Posted by Deejay
Originally Posted by Derek596
As I drive my auto like 'Miss Daisy', I am getting well over 50 mpg and about 300 miles per tank. A word of warning; the fuel consumption meter overreads by at least 10%. My fuel calculations come from filling to the brim and checking miles done since last fill. I rarely drive over 60 mph. Moreover, in response to CooperMan's comment about range anxiety, I have no worries and, unlike charging an EV, we can fill our fuel tanks in 5 minutes. My chum in his Porsche Taycan takes one hour; assuming he can find a charging point available.

This is all assuming the odometer is reading accurately of course. if the fuel consumption meter is apparently incorrect, it could be getting duff inputs on mileage travelled, which in turn of course could also affect your own calculations.


My speedometer and odometer is correct against GPS!

That’s good news. I have often wondered though just how accurate mpg meters might be. First, there is the issue of accurately measuring the volume of fuel used. Secondly, everything naturally has an error margin, but it is much in the vehicle manufacturers’ interest to aim for errors on the plus side only! Maybe I am too sceptical.


Doug
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1992 Triumph Trophy 900
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Smile, it confuses them
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I have tried a couple of different ways.

1. Brim to brim on filling as well with note of mileage.
2. mpg thingy on MB dash read out.
3. iPhone app speaking to ELM toggle thing attached to OBDII port

The differences were around 10-15% so I did a couple of journeys using all of them.

This was on the ML63 with a V8 lump with a severe petrol problem, changes are easy to spot on lower numbers

Brim-Brim 20.4mpg
The car's own MPG display 19.7mpg
OBDII 20.2mpg

I guess the Brim figure can change with heat, nozzle etc. I was surprised the car gave a lower figure than the OBD given they must be using the same data? Maybe they don't want mileagegate?
I am guessing that they use the engine management computer to follow the petrol injection information? So if the tyres are wrong or inflation out it could make a difference.

Either way I need to get less well acquainted with the loud pedal.


Everyone loves a Morgan. Even me, unless it's broken again.
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Formerly known as Aldermog
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Originally Posted by Alistair

Either way I need to get less well acquainted with the loud pedal.


No, no, not that.
Enjoy the excess.
One of the few pleasures left....for now.


Peter,
66, 2016 Porsche Boxster S
No longer driving Tarka, the 2014 Plus 8...

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Tricky Dicky
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Originally Posted by Alistair
I have tried a couple of different ways.

1. Brim to brim on filling as well with note of mileage.
2. mpg thingy on MB dash read out.
3. iPhone app speaking to ELM toggle thing attached to OBDII port

The differences were around 10-15% so I did a couple of journeys using all of them.

This was on the ML63 with a V8 lump with a severe petrol problem, changes are easy to spot on lower numbers

Brim-Brim 20.4mpg
The car's own MPG display 19.7mpg
OBDII 20.2mpg

I guess the Brim figure can change with heat, nozzle etc. I was surprised the car gave a lower figure than the OBD given they must be using the same data? Maybe they don't want mileagegate?
I am guessing that they use the engine management computer to follow the petrol injection information? So if the tyres are wrong or inflation out it could make a difference.

Either way I need to get less well acquainted with the loud pedal.

Thank you that has made me feel so much better with my 23mpg, brim to brim with E5 laugh2
Keep the faith guru keep it planted thumbs


2009 4/4 Sport Henrietta
1999 Indigo Blue +8
2009 4/4 Sport Green prev
1993 Con Green +8 prev





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Just barreling along
Needs to Get Out More!
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Just barreling along
Needs to Get Out More!
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Originally Posted by +8Rich


Keep the faith guru keep it planted thumbs

I never realised you liked gardening laugh2


Jon M
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