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Jun 14th, 2026
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Joined: Sep 2010
Posts: 1,511 Likes: 21
Talk Morgan Enthusiast
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Talk Morgan Enthusiast
Joined: Sep 2010
Posts: 1,511 Likes: 21 |
My 4/4 with 2 litre zetec on twin webers manages 24 mpg on me being well behaved or 12 mpg if I drive spirited.
But I drive a Morgan for fun not for economy.!
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Joined: Jun 2013
Posts: 1,461
Has a lot to Say!
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OP
Has a lot to Say!
Joined: Jun 2013
Posts: 1,461 |
How many miles (sorry, I mean kilometres) have you done in that year Peter? Sigmas do loosen up very nicely and my mpg has improved year by year (and I will freely admit I don't use it enough, so for others this gradual improvement may not be so noticeable). Only 4000 miles/6500km, so it must still be quite tight, though I have worked hard to loosen it up. They have been fun miles on mostly empty, winding Alpine roads. I have done very little cruising. I am sure that I could get 45-50mpg out of it if I really wished to do so...
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Joined: Sep 2009
Posts: 7,435 Likes: 122
Talk Morgan Guru
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Talk Morgan Guru
Joined: Sep 2009
Posts: 7,435 Likes: 122 |
Then I would say everything is fine with your engine!
'14 4/4 graphite grey
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Joined: Apr 2011
Posts: 8,015 Likes: 1
Posting Desperado Talk Morgan Guru
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Posting Desperado Talk Morgan Guru
Joined: Apr 2011
Posts: 8,015 Likes: 1 |
I have a 86 4/4 1905cc with a few tweak's its had twin Weber's DCNF's since the 80s and I get max 31 mpg sometimes less spoke to an elderly chap who does nothing but Weber's he said that's very good . He expected far less. Has them on his TR4A and its way down on the mog.
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Joined: Oct 2014
Posts: 5,017 Likes: 3
Charter Member
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Charter Member
Joined: Oct 2014
Posts: 5,017 Likes: 3 |
I get some 35 - 40mpg economy on my 4/4 (2011 registered)
Injection slightly too fat - indicated by the exhaust pipe smut.
Hannes
once: Green M3W; 2013
now: Red 4/4 Sport; 2011
and some practical cars for use in real life
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Joined: Nov 2011
Posts: 381 Likes: 3
Learner Plates Off!
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Learner Plates Off!
Joined: Nov 2011
Posts: 381 Likes: 3 |
My 4/4 Sigma with 30,000Km averages 6.5 ltr/ 100km
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Joined: Jul 2007
Posts: 27,809 Likes: 749
Member of the Inner Circle
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Member of the Inner Circle
Joined: Jul 2007
Posts: 27,809 Likes: 749 |
I checked the avg mpg from my old 1994 4/4 Zetec. 29.9 mpg, but it had been super chipped.
JohnV6
2022 CX Plus Four
2025 Renault Scenic Alpine etech "Yvette"
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GaB
Unregistered
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GaB
Unregistered
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My 2001 1800 Zetec (unmodified) does around 35mpg.
It will be interesting to see what happens when I tweak things next year (inlet, manifold, exhaust).
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Joined: Oct 2014
Posts: 5,017 Likes: 3
Charter Member
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Charter Member
Joined: Oct 2014
Posts: 5,017 Likes: 3 |
My 4/4 Sigma with 30,000Km averages 6.5 ltr/ 100km You're not driving fast enough! 
Hannes
once: Green M3W; 2013
now: Red 4/4 Sport; 2011
and some practical cars for use in real life
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Joined: Jan 2007
Posts: 3,480 Likes: 42
Talk Morgan Addict
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Talk Morgan Addict
Joined: Jan 2007
Posts: 3,480 Likes: 42 |
I have a plus4 and it does in the region of 38 mpg normally, but a bit less when caution is thrown to the wind!! It's about 3-4 mpg better since Williams remap was done, strangely enough!!!!
Robbie
2021 Plus Four -- Helga
211-WX-1433
"Fettlebodge"--A chief of the PaddyMogs
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