Real mpg / economy ???

[Mutley66]

hi, I'm looking to purchase the phev as I'm very impressed overall. However, before I commit to the purchase I really need to understand the economy figures. I've read all the info and spoke to a few dealers who have confirmed all the obvious info relating to mpg figures - but these are always linked to driving in electric mode. What I specifically need to know ( and nobody at Mitsubishi or the dealers are able to provide an answer) is the actual mpg when I am NOT driving in electric mode. I'm sure there must be some standalone figures on how the petrol engine performs mpg? As I simply need to know what mpg I will return when I am unable to drive in electric mode. I know many have advised it is difficult to answer as it's linked to the electric mode but surely there are real figures out there on the mpg of the petrol engine alone? I'm hoping someone can advise what mpg they are getting in there vehicle?

 

[anko]

In theory 5.8 l / 100 km (or 5.5 for the 2016 model). In real world, it all depends on your right foot. Like with any orher car. I find 7 l / 100 km easy to achieve.

 

[Neverfuel]

I mostly drive short journeys with a mixture of rural and stop / start town driving where I run mostly on battery - I usually get a useable 26 - 28 mile range.

On longer journeys the car indicates anywhere from 48 to 60 mpg and this seems fairly accurate, but it has taken the electric range into account.

I have done 910 miles and have only used 38 litres of fuel so far and charging has cost me £25 to date. So...

Total MPG on petrol = 910 / 38 X 4.55 (litres in a gallon) = 108 MPG
Total MPG factoring in electricity costs (£25 / price of a litre) = 25 / 1.16 = 21.55 litres equivalent + original petrol used (38 litres) = 59.55 litres equivalent. Therefore overall MPG is 910 / 59.55 X 4.55 = 69.52.

Obviously, as others will tell you, it depends on your usage, driving style, use of regen braking etc, etc, etc.....

Hope this helps

 

[kentphev]

hi, I'm looking to purchase the phev as I'm very impressed overall. However, before I commit to the purchase I really need to understand the economy figures. I've read all the info and spoke to a few dealers who have confirmed all the obvious info relating to mpg figures - but these are always linked to driving in electric mode. What I specifically need to know ( and nobody at Mitsubishi or the dealers are able to provide an answer) is the actual mpg when I am NOT driving in electric mode. I'm sure there must be some standalone figures on how the petrol engine performs mpg? As I simply need to know what mpg I will return when I am unable to drive in electric mode. I know many have advised it is difficult to answer as it's linked to the electric mode but surely there are real figures out there on the mpg of the petrol engine alone? I'm hoping someone can advise what mpg they are getting in there vehicle?

This is exactly what I asked prior to buying one!

My experience over a few thousand miles (and UK gallons) is

60-65mph around 40 mpg
75mph+ around 30 mpg

These are approximate, but representative.

That means if you like to zing along at high speed over long distances the PHEV is not aimed at you. At speeds below 70 mph the engine seems to generate enough power to drive the wheels and put a little back into the batteries. Above 75mph and the engine is driving the car only, as a result you see the kind of MPG you'd expect from a 2 tonne petrol SUV.

At the end of the day you have to be honest about what driving you do and whether the PHEV is likely to meet your targets.

 

[jaapv]

My typical Motorway figure is 11.0-11.5 Km/L. That is cruising at 120-130 Km/H.
I can easily push the car to be more thirsty, getting it more economical is not so easy if one wants to keep up with traffic.

I'll leave it at others to convert

 

[t3lmo]

Daily commuting 90% in electric, in 6.500 km total, I have 1.4 L/100 (MMCS manual fuel consumption value without resets).
In the highway with ACC set to 90km/h goes with 5 L/100 (MMCS automatic fuel consumption value).

 

[Regulo]

My experience agrees with all that's been said. Around town in EV - infinite mpg! On a 100 mile trip, on A roads, starting with a full battery, about 45 mpg. Same trip, starting with a "flat" battery, about 40 mpg. If you have to use it for longer runs, bear in mind it's a 2 ton car, which takes a bit of shifting! Of course once it is shifting, selecting B0 allows it to coast a long way. I can't vouch for this myself, but others can apparently better their mpg by using this to advantage.

 

[maby]

The figures are extremely dependent on your pattern of usage. While you are driving within EV range, you burn very little petrol and see an apparent figure of infinite mpg - clearly that is silly unless you are getting the electricity free of charge. If you are paying standard UK electricity tariffs, your effective mpg taking into account the relative prices of petrol and electricity will come out somewhere between about 150mpg and 200mpg.

Once you go beyond the EV range and start burning petrol, that quickly begins to dominate your running costs and you reach a point where you are driving a fairly heavy large 4WD petrol estate. So a lot depends on how far you can stretch the EV range. The headline 32 mile figure is very optimistic - it's only really achievable driving at around 30mph on clear, flat roads with no heating or aircon running. The best I've ever managed was 29.5 miles and I really was driving it like a milkfloat in late summer. I'm not particularly gentle with the car, driving it the same as I drive our big diesel Landcruiser and I reckon that my EV range averaged over the year comes out to a little over 20 miles.

I drive around 12,000 miles per year with a split of mostly short journeys well within EV range on weekdays and long journeys - around 200 miles - each weekend. We've had the car for about nine months and we're seeing an overall average of around 46mpg. I certainly could improve on this - I'm not prepared to sit in a cold car in the winter just to save some battery - but I think the overall improvement would be small. My fuel consumption is dominated by those weekend trips which are 100% petrol and always will be.

 

[anko]

Guys, TS explicitly said:

I know many have advised it is difficult to answer as it's linked to the electric mode but surely there are real figures out there on the mpg of the petrol engine alone? I'm hoping someone can advise what mpg they are getting in there vehicle?

So, let's not make things more complicated then they are ... for once

 

[maby]

Guys, TS explicitly said:

I know many have advised it is difficult to answer as it's linked to the electric mode but surely there are real figures out there on the mpg of the petrol engine alone? I'm hoping someone can advise what mpg they are getting in there vehicle?

So, let's not make things more complicated then they are ... for once

Quite true - didn't notice that - 46mpg - though it is still complicated since the car does not calculate the mpg achieved on engine alone - that is the figure it has calculated by dividing the total number of miles travelled on both petrol and EV by the number of gallons burned.

 

[gobiman]

I typically get 28 -40 mpg (ex-electric). Very simply - urban 28 ish, gentle A 40 ish and fast motorway 33-4 ish.
The simple way I look on it is that you get 20 miles (winter)/25 (summer) for "free" - and yes I know this isn't quite right!
You then have a "blended" mpg which clearly favours short trips AND regular charging.
After the charge has gone you simply have a two litre petrol SUV which is relatively efficient but still humping around the weight of a battery pack and the numbers above are precisely what I would expect.

 

[anko]

...though it is still complicated since the car does not calculate the mpg achieved on engine alone - that is the figure it has calculated by dividing the total number of miles travelled on both petrol and EV by the number of gallons burned.

I think it is doesn't have to be that difficult. Wait for the battery to deplete and the engine to start spontaneously. Then restart the trip computer. From any trip over 35 miles you should be able to get a reading. That is, if you don't aim at maintaining SOC The fact that some of the miles are in EV mode on generated electricity doesn't invalidate the MPG value. As long as SOC at beginning of trip equals SOC at end of trip, and both are well below 50% ( ).

IMHO, the reading from the trip computer is rather accurate.

 

[maby]

I think it is doesn't have to be that difficult. Wait for the battery to deplete and the engine to start spontaneously. Then restart the trip computer. From any trip over 35 miles you should be able to get a reading. That is, if you don't aim at maintaining SOC IMHO, the reading from the trip computer is rather accurate.

OK - but all that is giving you is snapshot figures for specific trips. I guess that if you are sufficiently pedantic about it, you could do this for every trip and calculate an overall figure for the lifetime of the car, but I really don't have the patience for that. I'm looking at the calculated figure for "manual" fuel consumption - but that does not distinguish between distance travelled in EV and distance travelled in petrol mode.

 

[duplo]

I need to do a few 250 mile runs, fully loaded, over the next few weeks. So it will be interesting to see what economy I get. I'm budgeting for 30mpg.

 

[maby]

I need to do a few 250 mile runs, fully loaded, over the next few weeks. So it will be interesting to see what economy I get. I'm budgeting for 30mpg.

You should be able to do better unless you have a very heavy right foot! 35mpg is easy and 40 quite realistic if you don't push it too hard.

 

[duplo]

I need to do a few 250 mile runs, fully loaded, over the next few weeks. So it will be interesting to see what economy I get. I'm budgeting for 30mpg.

You should be able to do better unless you have a very heavy right foot! 35mpg is easy and 40 quite realistic if you don't push it too hard.

Hopefully, but when I say loaded I mean five people, a full boot, roof box, two bikes on roof and three on the tow bar

 

[PeterGalbavy]

In a related topic can someone explain the functional difference between auto and manual mpg with respect to what the hell auto mode does? The manual is very badly written and laid ot on this subject.

 

[Neverfuel]

Auto MPG resets itself after four hours from turning the car off - so acts like a trip computer. Manual only resets when you reset it - so you can monitor MPG per tank or longer. You need to press reset in manual mode at least once though to get it to work.

 

[duplo]

I need to do a few 250 mile runs, fully loaded, over the next few weeks. So it will be interesting to see what economy I get. I'm budgeting for 30mpg.

You should be able to do better unless you have a very heavy right foot! 35mpg is easy and 40 quite realistic if you don't push it too hard.

I just did a 15 mile test run at 65mph with a roof load and aircon. 36mpg

 

[anko]

Did you start your test run with same SOC as you ended it with? On 15 miles, change in SOC kan make quit a difference.