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Old 09 February 2018, 02:58 PM
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Matty81
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Default Mpg drop

ive just switched from tesco99 to v power and noticed a drop in mpg, I’m normally on around 26/27 backwards and forwards to work but it’s dropped to around 21/22. Is this normal with a fuel change ?. Everything is fine with the car currently with no running issues. Just seems strange to drop that much.
Old 09 February 2018, 08:39 PM
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Nezscooby
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is your car is mapped?
Old 09 February 2018, 09:16 PM
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asht88
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Cold weather
Old 09 February 2018, 09:56 PM
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Matty81
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Originally Posted by Nezscooby
is your car is mapped?
yes mate
Old 10 February 2018, 12:21 PM
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Originally Posted by fawor
flat tyres on vpower
could say Zany will help but not this time-he is doing 26 miles only in 6weeks period
and he still needs tyres pressure gauges
If you are frustrated reading other people's posts, simply don't read them.

If you are depressed, it's best seeing a councellor instead of venting your frustration in here, no offence meant.

The same applies to others responding to your posts in a similar way.

Last edited by fpan; 10 February 2018 at 12:37 PM.
Old 10 February 2018, 03:28 PM
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Go back to Tesco 99 see if the normal mpg returns

Could be a bad batch of fuel?

Typically Tesco is a couple of pence per litre cheaper for what is essentially the same thing
Old 10 February 2018, 04:23 PM
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A big drop in air temp the last few weeks will see similar mpg returns effected.

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Old 10 February 2018, 06:43 PM
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Jon T
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I have noticed a similar drop in mpg the last couple of months. I only use v power
Just put it down to winter nothing else has changed. Air is colder/denser so more fuel is needed?
Old 10 February 2018, 08:41 PM
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Originally Posted by MOTORS S GT
A big drop in air temp the last few weeks will see similar mpg returns effected.
^This.
Old 11 February 2018, 12:57 AM
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Nezscooby
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Originally Posted by Matty81


yes mate
Try Tesco99 maybe your car has been mapped with Tesco99 and not on V Power
Old 11 February 2018, 08:00 AM
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Jon T
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Don't know about the op but mine was mapped on v power
Old 11 February 2018, 08:06 AM
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Matty81
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I was thinking about changing back to 99 for a couple of tanks to see what happens. It has been very cold recently so I assumed that it may be down to cold weather. I spoke to my mapper the other day and he told me that the car is good to use both vpower and 99 as it hasn’t been mapped too either. Thanks for the help guys
Old 11 February 2018, 11:31 AM
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Tesco 99 and V-Power come from the same tanks at Seal Sands, afaik.
Old 11 February 2018, 01:12 PM
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Probably you paid for v power but got unleaded. It’s happened to me a couple of times now. When I get proper v power mpg is better than Tesco 99 by 2 mpg.
Old 11 February 2018, 10:41 PM
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Originally Posted by Beastie
Probably you paid for v power but got unleaded. It’s happened to me a couple of times now. When I get proper v power mpg is better than Tesco 99 by 2 mpg.
seriously ? Things like that shouldn’t happen. I’ve been using v power for 4 weeks now and the first tank I had I was getting a decent mpg.
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