Gas seems to be going way too fast in 19 gransport

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Beachlife1020

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For example, I will fill up the car, it will reflect 200 mile range on the cluster. I will drive 1 mile and it will drop 9-10 miles in the range.

Also, after a cold start it will show anywhere from 10-30 miles less than what it should be. It will shoot back up a little once driving but I still feel it is not accurate.

Anyone dealt with this before or have any recommendations on what to look into?

Let me also mention that I have had the car maintained and serviced, it is at 49k miles.

Thank you!
 
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Beachlife1020

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I drive the majority of my time in ICE but I will change mode sometimes for bypassing someone for example.
When you say average, are you referring to average MPG? It will always show 40.0 MPG average. That is not right either.
 
safrane

safrane

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I take it this is a car in Gransport trim rather than a proper Gransport of the Coupe range.

The range will have been calculated of the last trip rather than your average over the last 100/1000 miles.

Hence if you drive it a short distance the MPG will be far lower than on a 100 mile trip on a motorway, so the range reflects that type of driving.
 
Oneball

Oneball

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Sounds normalish.

At cold start it is using more fuel per mile so its prediction is based on that fuel useage at that time. As the “choke” comes off the instantaneous mpg gets better and the range increases.
 
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Beachlife1020

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Yes gransport trim, not the coupe. I don’t quite get how it will fluctuate so much, the mileage range. Also, to test my assumption, I filled up $10 to get roughly 2.5 gallons. The range display went up barely anything, maybe 10 miles. It should be more.
 
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Beachlife1020

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Oneball said:
Sounds normalish.

At cold start it is using more fuel per mile so its prediction is based on that fuel useage at that time. As the “choke” comes off the instantaneous mpg gets better and the range increases.
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Really? But I could have 200 miles the night prior and then the next day upon starting it will be down significantly, the mileage range.
 
Oneball

Oneball

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But the night prior the instantaneous mpg would have been better as it wasn’t in cold start.
 
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Beachlife1020

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Oneball said:
But the night prior the instantaneous mpg would have been better as it wasn’t in cold start.
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Even when the car gets warmed up, it will not shoot back up. I don’t know I just feel it is off. I drive reserved and feel like it is dropping way too fast.
 
Oneball

Oneball

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Where and how you’re driving also makes a difference. My 2006 Merc will say 30 miles left when the empty light comes on if I’m doing 30mph in my road. 2 miles further on when I get to the dual carriageway at 50mph it’ll go up to 80 miles.

Have you actually compared how much you’re getting from a tank with the computer estimate.
 
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Beachlife1020

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Oneball said:
Where and how you’re driving also makes a difference. My 2006 Merc will say 30 miles left when the empty light comes on if I’m doing 30mph in my road. 2 miles further on when I get to the dual carriageway at 50mph it’ll go up to 80 miles.

Have you actually compared how much you’re getting from a tank with the computer estimate.
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I drive reserved. Most of the driving is city within 10 miles of the house, groceries etc and then highway during the week for work.

When you say compare to the computer estimate, are you meaning what it is displaying in the range and then scrutinizing it to make sure it is accurate?
 
safrane

safrane

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Without knowing which model and engine size it's difficult to say what you should get.

Round town my Gransport Coupe does c9mpg.
My 4.7 Granturismo does c12mog

However 9n the motorway I get c20 and 28 respectively... but they are highly stressed sports cars not a diesel superfine.
 
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Beachlife1020

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safrane said:
Without knowing which model and engine size it's difficult to say what you should get.

Round town my Gransport Coupe does c9mpg.
My 4.7 Granturismo does c12mog

However 9n the motorway I get c20 and 28 respectively... but they are highly stressed sports cars not a diesel superfine.
Click to expand...
19 gransport trim. 3.0 engine
 
CatmanV2

CatmanV2

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Beachlife1020 said:
Even when the car gets warmed up, it will not shoot back up.
Click to expand...

It won't because it's a moving average over the last n minutes (rough guess n=about 15) If you're crawling around in traffic, and then hit a nice even stretch of motorway, it won't shoot up then, either.

C
 
safrane

safrane

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Just go for longer drives and the MPG will improve...yes it will cost the same over the long run... but you will enjoy it more.
 
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