jpalfrey
Posts: 7
Joined: Mon Mar 15, 2021 2:42 am

What fuel consumption can I expect on 50mile run on motorway?

Wed Mar 17, 2021 3:33 am

Hi all,

I've read alot and seen alot of videos but I'd like some actual owner input on what to expect for fuel consumption on the motorway, from 25 mpg to 45-50 mpg.

I know it varies massively on driving style and weather conditions, and I understand the PHEV drivetrain design has a massive efficiency range (very high and very low) vs conventional ICE.

I know the EV range is ~ 20 miles, thats fine for my wifes commute and local driving. What I'm unsure about is longer distances as I've seen varying reviews and numbers.

So let me tell you my driving style and commute I'm looking to assess, I have a 48 mile (each way 96 round trip) commute, which consists of:
- 4 miles of 30-40mph B road
- 43 miles of dual carrigeway & motorway
- 1 mile B road (40mph)

That's roughly the commute, I drive usually 65mph max on cruise control on motorway with a light right foot looking ahead down the road to match speed to traffic, aiming to pass green lights moving etc and basically no harsh accelerating and avoiding the brake (heat) pedal as much as possible.

I understand aerodynamics and energy consumption etc, I have a Passat CC 2.0 Tdi which I get average of 55mpg on this trip (usually higher on return due to elevation, wind direction and temperatures in the afternoon vs morning).

My main question is what could I expect from an outlander PHEV, I understand the engine will drive the front wheels above 42mph, and I can probably expect 20 miles EV only (depending on temp & weather conditions etc).

The ICE will fire up at some point in my commute and I should be able to charge at work (but can't guarantee this) so I'm after an idea of what kind of fuel (petrol) consumption could I expect to consume over my commute?

Also is it best to drive as far as possible on EV mode then let ICE kick in, or is it better to leave more in the battery and run more miles in hybrid/parrallel mode?

I'm contemplating hiring an Outlander PHEV for a week to try my commute out and see what I can expect.

I'm not expecting a 2 tonne 4wd SUV to match my Diesel 2wd Saloon, so many factors there that will mean they aren't comparable but hopefully some owners can align to how I drive and provide some real world feedback and advise on what I might see.

Thanks in advance

Bloggsy
Posts: 67
Joined: Tue Sep 10, 2019 7:13 am

Re: What fuel consumption can I expect on 50mile run on motorway?

Wed Mar 17, 2021 3:16 pm

From my experience, I've tried to use the Save and Charge functions during my 2 years with my Outlander and the best advice I received was to just let the car do its thing and drive how you would 'normally'!

I recently had to drive to a destination 54 miles away, then return home and repeated this the following week so it's similar to your commute although the majority of the driving was at 70mph which does kill the battery and reduces mpg.

The first thing I'd ask is whether you can charge your Outlander at work? To maximise the range, you should start your journey with a full battery and finish with an empty one.

For me, I started with a full battery but couldn't charge until I returned home and I managed to get 2 complete return journeys with a tank of fuel and got 37mpg on my first journey and 39mpg on my second journey.

I did a couple of local journeys in between (minimal use of the ICE) and, with a fully charged battery, I've got about a quarter of a tank of fuel showing and my GOM says 90 miles range so possibly enough for half of the commute? If you could charge at work (so effectively only using the ICE for 30 miles), you'd probably get 3 complete journeys per tank of fuel.

Your mpg starts off really high - I got readings of 90mpg when I checked not long after the ICE started but this steadily reduces the longer you use the ICE, although it pops back up slightly when the recharge function helps and you get some battery power back.

Hope this helps.

Cheers

Bloggsy
2015 GX4h in Black
Living in Scotland

littlescrote
Posts: 272
Joined: Fri Jul 26, 2019 3:52 am

Re: What fuel consumption can I expect on 50mile run on motorway?

Thu Mar 18, 2021 1:37 am

I would expect around 45mpg for that journey, provided you charge each end. The short low speed sections do you no favours, it's there where the EV mode comes into its own and delivers the economy benefit.

oscarmax
Posts: 132
Joined: Sat Oct 27, 2018 3:47 am

Re: What fuel consumption can I expect on 50mile run on motorway?

Thu Mar 18, 2021 3:11 am

littlescrote wrote:
Thu Mar 18, 2021 1:37 am
I would expect around 45mpg for that journey, provided you charge each end. The short low speed sections do you no favours, it's there where the EV mode comes into its own and delivers the economy benefit.
I can probably agree with your figures, charging at both ends 70 mile journey - 4 degrees C heater on, speed limiter set to 60mph we are achieving,
50mpg, now the weather is warming up same journey no heating 112mpg
Mitsubishi Outlander 2.4 PHEV Design 2020 Towing a Swift Conqueror 480 2016 1500kg

Please be patient I suffered a brain injury several years ago and get confused at times

Fjpod
Posts: 105
Joined: Sat Nov 30, 2013 6:11 pm
Location: NYC

Re: What fuel consumption can I expect on 50mile run on motorway?

Thu Mar 18, 2021 5:34 am

I think on a 50 Mile run of varied driving, not exceeding 60 mph, you could expect At least 50 mpg. Probably less if you use heat. You might get 50 with limited AC.

On a 50 Mile run, I would not bother with Save or Charge.
Previous prius and imiev owner.

kpetrov
Posts: 101
Joined: Thu Oct 29, 2020 8:59 am

Re: What fuel consumption can I expect on 50mile run on motorway?

Thu Mar 18, 2021 6:00 am

Bloggsy wrote:
Wed Mar 17, 2021 3:16 pm
From my experience, I've tried to use the Save and Charge functions during my 2 years with my Outlander and the best advice I received was to just let the car do its thing and drive how you would 'normally'!
Bloggsy
'Normally' the battery will be depleted down to nothing.
Why should I let that happen on the highway if a stop and go city traffic is ahead!?
2018 Outlander PHEV (Canadian)

ThudnBlundr
Posts: 751
Joined: Mon Mar 12, 2018 2:18 am
Location: Yorkshire end of M1, UK

Re: What fuel consumption can I expect on 50mile run on motorway?

Fri Mar 19, 2021 6:13 am

kpetrov wrote:
Thu Mar 18, 2021 6:00 am
Bloggsy wrote:
Wed Mar 17, 2021 3:16 pm
From my experience, I've tried to use the Save and Charge functions during my 2 years with my Outlander and the best advice I received was to just let the car do its thing and drive how you would 'normally'!
Bloggsy
'Normally' the battery will be depleted down to nothing.
Why should I let that happen on the highway if a stop and go city traffic is ahead!?
Because there's no proof that doing anything different actually improves your fuel economy. Unless you have some?
2015 GX4hs since 03/18
2015 Renault Zoe R240 owner since 11/17

You may have speed, but I have momentum...Image

greendwarf
Posts: 2299
Joined: Tue Aug 05, 2014 1:32 pm

Re: What fuel consumption can I expect on 50mile run on motorway?

Sat Mar 20, 2021 10:44 am

But it can help avoid sitting stationery in a traffic jam in a fog of your own exhaust :o

jaapv
Posts: 4595
Joined: Mon Dec 16, 2013 1:18 pm
Location: Netherlands

Re: What fuel consumption can I expect on 50mile run on motorway?

Sat Mar 20, 2021 12:18 pm

ThudnBlundr wrote:
Fri Mar 19, 2021 6:13 am
kpetrov wrote:
Thu Mar 18, 2021 6:00 am
Bloggsy wrote:
Wed Mar 17, 2021 3:16 pm
From my experience, I've tried to use the Save and Charge functions during my 2 years with my Outlander and the best advice I received was to just let the car do its thing and drive how you would 'normally'!
Bloggsy
'Normally' the battery will be depleted down to nothing.
Why should I let that happen on the highway if a stop and go city traffic is ahead!?
Because there's no proof that doing anything different actually improves your fuel economy. Unless you have some?
I don't care about proof - it saves considerably for me when I follow the simple rules: Run on EV below 80 kph, run on Charge when on a faster road, up to the SOC level you will need for the slower bits ahead and then hit Save. Worked flawlessly for the last eight years.
Instyle 2019
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Before:
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kpetrov
Posts: 101
Joined: Thu Oct 29, 2020 8:59 am

Re: What fuel consumption can I expect on 50mile run on motorway?

Mon Mar 22, 2021 5:52 am

ThudnBlundr wrote:
Fri Mar 19, 2021 6:13 am
kpetrov wrote:
Thu Mar 18, 2021 6:00 am
Bloggsy wrote:
Wed Mar 17, 2021 3:16 pm
From my experience, I've tried to use the Save and Charge functions during my 2 years with my Outlander and the best advice I received was to just let the car do its thing and drive how you would 'normally'!
Bloggsy
'Normally' the battery will be depleted down to nothing.
Why should I let that happen on the highway if a stop and go city traffic is ahead!?
Because there's no proof that doing anything different actually improves your fuel economy. Unless you have some?
Besides greendwarf and jaapv coments there is actually an proof. Check at the consumption of any vehicle with running ICE on highway and city driving conditions. If you think there is no difference there is no point to go in any further details, like the additional losses in our vehicles from el. energy conversions which are less on parallel mode.
2018 Outlander PHEV (Canadian)

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