[ghare79]

First Landrover but not my first PHEV.
Wondered what others
were finding on long motorway cruises, when the battery has been depleted.
What I am seeing is that once the battery reaches 5%, the system will then be constantly charging the battery, just to maintain the 5%. This is seen on the energy flow map on the Pivi. The increased load on the engine whilst charging gives shocking MPG (10-30mpg), as you'd expect. I understand the need for a bit of a top up here and there, but this is literally, constant. For long trips (>200m) I just sit and watch the engine charge the battery and my fuel drop at an alarming rate.
Run on Save mode and this would operate the same. Constant charging just to maintain the set level.
As a test, with a full battery, I ran on engine alone, constant speed 69mph, heaters and everything that could be turned off - off, and watched the battery level. The battery dropped 2-3% a minute! The mpg of the engine alone when not charging the battery was what I would expect on the motorway, 40-50mpg.
Cruising on EV mode, the battery dropped by 3-5% a minute!
What could possibly be drawing as much power as the electric motor?

I assumed this had to be a fault with the system as previous PHEVs would not be required to constantly charge the battery once depleted.
Told by LR that this was how it worked! Took another P300e out, carried out the same tests, and it was the same!
Shockingly, the Defender, that I had whilst mine was in the garage, was more economical on the motorway than their hybrid with a depleted battery.

I am well aware that PHEVs are not the ideal car for long motorway cruises and the reported mpg is a fairy tail when driving anything other than the school run, but there should not be a need to be charging off the engine so much?!

 

[ghare79]

Exactly what is your fuel consumption when you fill the tank and compute the MPG?

I do a mixture of short EV only trips to the office where I can charge at both ends which pulls my average up, and long trips.
I'm averaging a calculated 34-38 mpg.
The BMW 530e was doing about 65 mpg same trips.

 

[ghare79]

Hi, With my P300e, my average fuel consumption is about 10 to11 l/100 km (23-21 mpg) on the motorway running with speed control at GPS speed 130 km/h - counter 134 km/h (81 - 83 mph). These figures have not varied significantly since I owned the car (2 years / 25000 km / 15500 m). They are not shocking in my opinion for a heavy and large car with a petrol engine. In the same conditions, my D150 Discovery Sport (400 kg lighter) was about 9 l/100 (26 mpg). Since my car is repaired (it was continuously draining current on the HV battery even when not used... or in save mode !), when battery is depleted and Hybrid mode is active it recharges only when braking or in slopes. When switching to Save mode (which I have done to go skying and make sure to benefit from the 4 motions at arrival), fuel consumption is about 11 to 12 l/100 km (21 - 19 mpg) and it takes about 2 hours to fully charge the battery.
Hope it is useful and understable as my English is poor (I am French...)

It's not the mpg I'm concerned about. It is what it is. It is a big car at the end of the day.
My concern is the constant charge from the engine just to maintain a constant batery level or the draining of the battery when on engine only.
The battery doesn't lose charge when stood either.
Something on that car is using almost as much power as the electric motor when the car is cruising.

 

[ghare79]

Hi, With my P300e, my average fuel consumption is about 10 to11 l/100 km (23-21 mpg) on the motorway running with speed control at GPS speed 130 km/h - counter 134 km/h (81 - 83 mph). These figures have not varied significantly since I owned the car (2 years / 25000 km / 15500 m). They are not shocking in my opinion for a heavy and large car with a petrol engine. In the same conditions, my D150 Discovery Sport (400 kg lighter) was about 9 l/100 (26 mpg). Since my car is repaired (it was continuously draining current on the HV battery even when not used... or in save mode !), when battery is depleted and Hybrid mode is active it recharges only when braking or in slopes. When switching to Save mode (which I have done to go skying and make sure to benefit from the 4 motions at arrival), fuel consumption is about 11 to 12 l/100 km (21 - 19 mpg) and it takes about 2 hours to fully charge the battery.
Hope it is useful and understable as my English is poor (I am French...)

You state "Since my car is repaired (it was continuously draining current on the HV battery even when not used... or in save mode !)"
This could be similar. What was the issue you had here and what was replaced?
Did it drain the battery when in use or would it drain when parked?