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Fuel consumption throughout the day (IV PHEV)

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I drive an EV so it is easy to see how energy is used and regenning puts power back in.  For the OP I will give an example.       Say I am in Peniciik and head down to Cameron toll be it in an EV, hybrid, ICE or what ever I can use little fuel, electricity or even produce electricity.  If I go into Edinburgh and head back the same way to Penicuik up hill I might have used up any saving going down hill.        But if I am into town and go out to the Gyle, come back up the by-pass and then out by Hillend and then back into Penicuik by Mauricewood I might have used less energy / fuel by the time and even driven further.    That's how regeneration can make a difference.   With hybrids / self charge hybrids you might look at circular routes.  True , what goes down needs to get back up but hypermilers get to be aware or efficient routes.   Like cyclists might as well.    In an EV there are routes I might have the range going anti clockwise but not Clockwise.   Eg. Cairngorm routes, Angus glen circular routes etc.  

Steep uphill and high energy use and then long downhill sections to lower levels, sea level and a route back home / starting point, without much climbing.

Doing in reverse i would maybe need to get a charge someplace.

Edited by Rooted

  • Author
3 hours ago, Rooted said:

I drive an EV so it is easy to see how energy is used and regenning puts power back in.  For the OP I will give an example.       Say I am in Peniciik and head down to Cameron toll be it in an EV, hybrid, ICE or what ever I can use little fuel, electricity or even produce electricity.  If I go into Edinburgh and head back the same way to Penicuik up hill I might have used up any saving going down hill.        But if I am into town and go out to the Gyle, come back up the by-pass and then out by Hillend and then back into Penicuik by Mauricewood I might have used less energy / fuel by the time and even driven further.    That's how regeneration can make a difference.   With hybrids / self charge hybrids you might look at circular routes.  True , what goes down needs to get back up but hypermilers get to be aware or efficient routes.   Like cyclists might as well.    In an EV there are routes I might have the range going anti clockwise but not Clockwise.   Eg. Cairngorm routes, Angus glen circular routes etc.  

Steep uphill and high energy use and then long downhill sections to lower levels, sea level and a route back home / starting point, without much climbing.

Doing in reverse i would maybe need to get a charge someplace.

I agree but my short journey to Tesco is from Bonnyrigg to the Tesco at Eskbank. That's downhill and I got nearly 70mpg in my old diesel. The hybrid, if the battery is at 0 miles, gets about 20mpg. This morning the battery was at 3 miles and it was reading 300mpg most of the way until the engine kicked in.

 

Sport mode seems to charge the battery more than normal mode.

In Sport / S is how i drive almost every car.   Petrol / Diesel, Hybrid / PHEV or BEV.   With the likes of a Niro you can compare like for like vehicle size / weight.

 

Get moving and 'coast'  using coast function or just how done for years with autos, lift off the accelerator.

Most cars i drive especially modern ones can be like slugs in ECO or Normal / D.

 

Sometimes OK in traffic going slow and if you get lighter steering than in Sport / S. 

 

It is all about trying what you like, and location location location.   Some cars regeneration is ridiculous in bring a car to a halt and no regen.  One pedal driving. 

4 hours ago, mccririck said:

I agree but my short journey to Tesco is from Bonnyrigg to the Tesco at Eskbank. That's downhill and I got nearly 70mpg in my old diesel. The hybrid, if the battery is at 0 miles, gets about 20mpg. This morning the battery was at 3 miles and it was reading 300mpg most of the way until the engine kicked in.

 

Sport mode seems to charge the battery more than normal mode.

 

 

I tend to keep my PHEV charged as much as possible so to avoid using petrol. Sometimes I have 0 miles on the battery in morning and it will run the engine to heat up and fuel economy suffers. For short hops around Glasgow 30mpg isn't uncommon but if it's cold like now with heating, lights on and I'm sitting at traffic lights, it can fall around the low 20s for mpg and sometimes worse if it's stationary traffic. 


 

The 70mpg is amazing from the diesel tbh. When I had the diesel Fabia I struggled to get anywhere near that at any time - perhaps only a sensible cruise on the motorway. I had to drive from Haymarket once to near the City Council offices at rush hour and got 14mpg in the petrol Karoq! 

  • Author
3 hours ago, flyingscot said:

 

 

I tend to keep my PHEV charged as much as possible so to avoid using petrol. Sometimes I have 0 miles on the battery in morning and it will run the engine to heat up and fuel economy suffers. For short hops around Glasgow 30mpg isn't uncommon but if it's cold like now with heating, lights on and I'm sitting at traffic lights, it can fall around the low 20s for mpg and sometimes worse if it's stationary traffic. 


 

The 70mpg is amazing from the diesel tbh. When I had the diesel Fabia I struggled to get anywhere near that at any time - perhaps only a sensible cruise on the motorway. I had to drive from Haymarket once to near the City Council offices at rush hour and got 14mpg in the petrol Karoq! 

 

The 70mpg was specific to that one journey from my house. typically I could get low 60s on a long journey if I was careful with the throttle. In the winter I remember it being around 50mpg sometimes. Was definitely worse mpg when the weather was cold.

If you are on a time of day tariff like octopus intelligent, it should cost you £1 for a full charge for ~30 miles of driving. Even at 60MPG it will cost around £3.75 for the same amount of petrol at todays prices. If you’re not on a time of day tariff. Then it is pretty close

On 02/11/2023 at 10:40, MiniNinjaRob said:

If you are using the car display to figure out your mpg you’re dafter than you realise. 
After a couple of years of tracking MPG I have the following conclusions for my driving, bearing in mind I live in a hilly area. 
1) I can do solely electric miles if driving locally but recently it hasn’t been worth it due to the price of electricity. As prices are coming down I am doing the math to see if it’s worth it again. 
2) Long motorway journeys keeping to the speed limit without a full charge of electric gets me 45mpg average 

3) lowest mpg I ever got was 30mpg, no charging and town driving only (might have had a heavy right foot for a couple of weeks)

4) General MPG for me with a lot of town driving and 20 mile journeys is about 35-40mpg with no electric charge. 
 

All in all I’m happy, it’s not too much less than my previous Toyota Auris mild hybrid and it has nearly twice the power and is a lot bigger. 


If you are on a time of day tariff like octopus intelligent, it should cost you £1 for a full charge for ~30 miles of driving. Even at 60MPG it will cost around £3.50 for the same amount of petrol at todays prices. If you’re not on a time of day tariff. Then it is pretty close

Edited by PoloGaz

  • 2 weeks later...
  • Author
On 02/11/2023 at 10:12, Rooted said:

What the OP could do is brim the fuel tank and not charge the battery and then see on a trip if it does 500 miles or more on just 10 imperial gallons. 

The tank is 41 litres so does not fit 10 imperial gallons which would be about 45 litres I think.

The Tank might well be 41 litres but next time you are near empty or on reserve just see how much it takes with petrol up the pipe / brimmed a d not even venting the tank.

 

A 45 litre Fabia tank can take 52 litres when not empty.     You get to know these things over the year when buying and paying for your fuel and paying attention.

 

PS.

Same thing regardless of Tank Size, drive 400 miles without charging the battery and having brimmed it and see when brimming how many litres it used. 

Edited by Rooted

  • Author
Just now, Rooted said:

The Tank might well be 41 litres but next time you are near empty or on reserve just see how much it takes with petrol up the pipe / brimmed a d not even venting the tank.

 

A 45 litre Fabia tank can take 52 litres when not empty.     You get to know these things over the year when buying and paying for your fuel and paying attention.

I heard it's not good to fill it up to the brim and you should let the pump cut off itself.

Not good to over fill.  Very true.   I am not suggesting venting, yet i have done so for years when wanting Super Unleaded and going where there is not much.  eg North Coast 500.

Some people need to get travelling and will brim and go and especially if they have a small tank and a PHEV that really does not do very good economy once the battery is depleted. 

Real world.   Not WLTP Kidology figures.

Edited by Rooted

  • Author
39 minutes ago, Rooted said:

 

I find mine has. Been getting high 40s and even low 50mpg without charging, but depends on the type of journeys. I'm driving fairly carefully.

Edited by mccririck

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