efficiency

Efficiency is the often measurable ability to avoid wasting materials, energy, efforts, money, and time while performing a task. In a more general sense, it is the ability to do things well, successfully, and without waste.In more mathematical or scientific terms, it signifies the level of performance that uses the least amount of inputs to achieve the highest amount of output. It often specifically comprises the capability of a specific application of effort to produce a specific outcome with a minimum amount or quantity of waste, expense, or unnecessary effort. Efficiency refers to very different inputs and outputs in different fields and industries. In 2019, the European Commission said: "Resource efficiency means using the Earth's limited resources in a sustainable manner while minimising impacts on the environment. It allows us to create more with less and to deliver greater value with less input."Writer Deborah Stone notes that efficiency is "not a goal in itself. It is not something we want for its own sake, but rather because it helps us attain more of the things we value."

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  1. Waterstoney

    Electric Driving Efficiency over 1000 Miles

    I have ZS Trophy LR for 5 months. I drove 1700 miles. My electric driving efficiency was 3.9 mls/kWh for 100h of driving. My best efficiency was on 20 mls round trip to work: 5.5 mls/kWh to work, 5.6 kWh back home in July. My best motorway efficiency was 100mls round trip to Gatwick Airport...
  2. AndyL61

    LR battery efficiency.

    I have a Trophy and being tight try to get the most out of my quids worth of kWh. The NMC battery is more energy dense the higher the SOC. So you get more m/kWh the higher the SOC. So for the best m/kWh use the top end of the SOC and recharge before it gets low (less than 50%). Biggest problem...
  3. L

    Nice efficiency

    Had a return journey of 25 miles in and out Manchester including city drive and motorway. 5 mile/kwh is decent. Considering the size of the car, the efficiency is very impressive. Love my MG ZS.
  4. D

    First long run miles/KW

    So picked the Trophy up yesterday and had a run today from Manchester to south Shropshire on a mix of motorway and A roads and got 4.4 mikes/Kw which thanks to the warm weather I don’t think is too bad - had to run the A/C as it’s so hot? Pleased to see I got 7 KW regen too Sorry for the...
  5. AreFriendsElectric

    Autohold function

    Apologies if this has been covered previously. I have a second generation long range and have started to use the autohold function a bit more recently. I noticed that waiting at lights etc if I were to put my foot on the brake instead this would still use some energy whereas the autohold would...
  6. PaulC82

    To AC or not to AC…

    Just got a ZS EV and loving it. However, coming from a fossil car and my “only use AC when the outside temperature is above 24 degrees, to save fuel” mentality, does the same apply to EVs? Is it more efficient, conversely, to just set the climate control to a temperature and leave it in auto...
  7. D

    Regen benefits not been recorded....

    Since I got my LR , now a month . Whenever I check the regen benefits it shows dashes. I keep the charge well under 80%, and had many journeys with battery within 20%, So should be enough space to get the regen in. Why is it not recording ....
  8. J

    My23 cars and efficiency

    I've read quite a few posts on here around how larger wheels affect efficiency, can anyone supply some science to collaborate this as if the overall diameter remains the same how can the efficiency change. I ask this as it's now confirmed that the my23 cars will come with larger rims but the...
  9. Les burrows

    MG4 March efficiency SE SR

  10. P

    Mismatch with %age and efficiency on MG5 Long range EV

    We’re really enjoying our new MG. 890 miles now from new as a pre-reg with 6 miles on the clock. I’d be really grateful for any thoughts please. . . I did a balance charge after 712 miles on our granny charger overnight yesterday and travelled 89 miles straight after this morning using 39%...
  11. A

    MG ZS EV Charging Efficiency

    Hi everyone, I've had my ZS SE LR since the end of November and I'm loving it so far. However, I've noted quite a big difference in the amount of electricity my zappi charger says it has put into the battery and how much the battery % has increased. Does anyone know what the round trip...
  12. nbenn

    Efficiency and Battery Heating

    Question I have from looking at forums from people discussing how to increase their miles per kwh. Is it more cost efficient (less energy used in total) to just drive away cold (as long as you don't need the distance) rather than heating battery before driving each time? Do you end up using...
  13. fshuk1

    Charging efficiency

    I am charging my SE SR car using granny cable at home. My electricity use shows 2.3kW being used. My iSmart app shows 1.87kW charging power. This is a loss of 19%. My question is if you charge using the granny chargers what does your iSmart show as charging power and also what is your efficiency...
  14. T

    Gently, gently catchee monkee - MG5 efficiency with light foot

    If you hate efficiency look away now ... ;) Forgot to charge overnight so when it came to my 45 mile drive to work this morning I was super careful to drive as efficiently as possible, in order to make it there with as much charge as possible. Started with 31% battery, outside temp 7°C, got to...
  15. D

    Mods for Efficiency

    Has anyone considered what could be modded to improve the efficiency on the ZS? Some things have been discussed before like tyre pressure, but what about changing the aerial, different body mouldings? tinting glass, to improve summer AC usage, or even replace the wing mirrors with cameras etc...
  16. TonyWilk

    MG4 Charging efficiency

    I'm using the 'Granny charger' that came with the car (MG4 Trophy) and plugged it into a cheap 'Energy Monitor' to get some idea of how much 'leccy I'm using. Just charged from 48% to 80% which should be nearly 20kwh, the meter said 25.1kwh which is about 80% efficient. Anyone else got numbers...
  17. BugEyed

    MG4 efficiency - impossible to run fan without heater on

    The original Gen 1 Mark 1 Nissan LEAF had a PTC heater rather than the heat pump of most later models. A "feature" of the set up was that it wasn't possible to run the fan without the PTC heater running, regardless of the temperature set on the climate control or outside. So even in say 30C...
  18. J

    MG4 Motorway Hypermiling efficiency 55 to 60 mph...

    Hi everyone, I can find a lot of hypermiling tests on Cars like the Kona electric etc driving between 55 to 60 and getting 5 kwh and above. If anyone has done this or planning to please update this thread on your MG4!
  19. J

    What's your MG4 Motorway Efficiency & what Speed etc are you doing to get that ?

    What is your MG4 motorway efficiency and whats speed and settings did you put to achieve that...
  20. Nigelleics

    Motorway efficiency test MG4 Trophy

    Hi. I thought I'd spend this nice day seeing what difference it made changing the Regen settings and testing the efficiency at gentle motorway speeds. I did 2 runs of 27 mile there, 27 mile back along the A46 dual carriageway from North Leicester to Newark. This allowed a clear run with no...
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