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Post by jonksy on Dec 5, 2023 6:57:36 GMT
How accurate is the official range of electric cars?
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Post by walterpaisley on Dec 5, 2023 8:17:57 GMT
U-Matic were a tv industry standard until the late Seventies (way before my time).
Reliable, stable, and non-degradable - the BBC in particular went very big on them.
Which in turn, ironically, has led to the crisis of so many VT-shot productions being lost forever: They were so expensive, and took up so much library space, that taping over things for reuse became the norm.
Most notoriously, looking for the Beeb coverage of the Moon Landing in 1989 for a 20th anniversary programme, only to find it had been reused for a Milk Cup second round replay..
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Post by walterpaisley on Dec 5, 2023 8:24:28 GMT
How accurate is the official range of electric cars? My brother (retired scientist) tells me to read such figures as a rough guideline. "Range" will have been tested under laboratory conditions, which are optimal to a degree that no one is ever going to encounter in the real world. It's exactly the same as "mileage" for an IC vehicle, "battery life" for your phone, and "enjoyment" for a Derby County match. |
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Post by zanygame on Dec 5, 2023 8:25:19 GMT
Nope. The published range is that given by 80% really? - have you a link to any manufacturers website to support that contention? Well my sons MG EV normally charges to 80%, it even has a feature for exceptional long journey's that allows you to charge it to 100% When he bought the car he was advised on both ranges. However I apologise , I was told this was the case with the EU stats, but I can't find anything on the internet stating this, so I withdraw the statement. |
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Post by zanygame on Dec 5, 2023 8:34:19 GMT
How accurate is the official range of electric cars?
Thanks Jonsky The Worldwide Harmonised Light Vehicle Test Procedure (WLTP) is the officially approved way of measuring fuel consumption, electric range and carbon dioxide (CO2) emissions for new cars. The figures have to be quoted for all cars registered after January 2019. The WLTP test cycle was developed using real driving data from around the world – so it’s relatively realistic – certainly more so than the previous New European Driving Cycle (NEDC) test. For an electric car, the battery must be fully charged at the start of the bench test. Immediately afterwards, engineers reconnect the car to a charger using a cable equipped with an electric meter. The figures offer a level-playing-field comparison between electric cars. They should still be used as a guide, though – you will need to adjust your driving habits to achieve the quoted range. Furthermore, some influencing factors are out of your control. |
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Post by jonksy on Dec 5, 2023 8:41:05 GMT
How accurate is the official range of electric cars?
Thanks Jonsky The Worldwide Harmonised Light Vehicle Test Procedure (WLTP) is the officially approved way of measuring fuel consumption, electric range and carbon dioxide (CO2) emissions for new cars. The figures have to be quoted for all cars registered after January 2019. The WLTP test cycle was developed using real driving data from around the world – so it’s relatively realistic – certainly more so than the previous New European Driving Cycle (NEDC) test. For an electric car, the battery must be fully charged at the start of the bench test. Immediately afterwards, engineers reconnect the car to a charger using a cable equipped with an electric meter. The figures offer a level-playing-field comparison between electric cars. They should still be used as a guide, though – you will need to adjust your driving habits to achieve the quoted range. Furthermore, some influencing factors are out of your control. You know full well zany ev's are far from non pollutants. And at least I know without any shadow of a doubt how many miles I can get from a tank of diesel. |
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Post by zanygame on Dec 5, 2023 8:48:44 GMT
Thanks Jonsky The Worldwide Harmonised Light Vehicle Test Procedure (WLTP) is the officially approved way of measuring fuel consumption, electric range and carbon dioxide (CO2) emissions for new cars. The figures have to be quoted for all cars registered after January 2019. The WLTP test cycle was developed using real driving data from around the world – so it’s relatively realistic – certainly more so than the previous New European Driving Cycle (NEDC) test. For an electric car, the battery must be fully charged at the start of the bench test. Immediately afterwards, engineers reconnect the car to a charger using a cable equipped with an electric meter. The figures offer a level-playing-field comparison between electric cars. They should still be used as a guide, though – you will need to adjust your driving habits to achieve the quoted range. Furthermore, some influencing factors are out of your control. You know full well zany ev's are far from non pollutants. And at least I know without any shadow of a doubt how many miles I can get from a tank of diesel.No you don't. Diesels are subject to range inaccuracy, as anyone who's driven one (That's everyone) knows. |
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Post by steppenwolf on Dec 5, 2023 8:49:57 GMT
How accurate is the official range of electric cars?
The WLTP returns nonsense figures - especially for hybrids. And the WLTP range figures are not even claimed to reflect real-life figures. They're for a car doing about 30 mph starting with 100% charge until it's flat, in summer conditions. So it's very optimistic. Also they don't actually drive the car till it stops - they do a fixed mileage and then use some kind of check on the battery to test what percentage of charge is left. And this seems to give optimistic readings too. There are a few things that catch people out with BEVs. The first is that range is heavily temperature dependent, so in winter range is significantly reduced. They're also very affected by the weight you're carrying and the speed you're doing - much more so than a conventional car. That's what they found on Fifth Gear when testing vans. When fully loaded their range was very badly affected. |
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Post by jonksy on Dec 5, 2023 9:07:53 GMT
You know full well zany ev's are far from non pollutants. And at least I know without any shadow of a doubt how many miles I can get from a tank of diesel.No you don't. Diesels are subject to range inaccuracy, as anyone who's driven one (That's everyone) knows. Total bollocks. I know full well that if I use my heater, demister and wipers my range will not be cut by 35%... |
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Post by Deleted on Dec 5, 2023 11:11:40 GMT
Have you got a link to prove that? What about a lead acid battery? Mobile batteries can be charged to 80% as part of the battery protect software in some mobiles, but when they are fully charged, they are. This looks like another zanygame maths aberration. Probably, but I couldn't care if you believed me or not. Expect to be called out when you post nonsense. |
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Post by jonksy on Dec 5, 2023 12:02:32 GMT
You know full well zany ev's are far from non pollutants. And at least I know without any shadow of a doubt how many miles I can get from a tank of diesel.No you don't. Diesels are subject to range inaccuracy, as anyone who's driven one (That's everyone) knows. Diesel drivers could see huge impact from landmark High Court emissions scandal hearing this week
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Post by zanygame on Dec 5, 2023 17:15:37 GMT
No you don't. Diesels are subject to range inaccuracy, as anyone who's driven one (That's everyone) knows. Total bollocks. I know full well that if I use my heater, demister and wipers my range will not be cut by 35%... So do I. Can you imagine your heater and windscreen wipers using 35% of the power needed to move your car. You live in san fairy dicky bird land. |
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Post by zanygame on Dec 5, 2023 17:20:07 GMT
No you don't. Diesels are subject to range inaccuracy, as anyone who's driven one (That's everyone) knows. Diesel drivers could see huge impact from landmark High Court emissions scandal hearing this week
Yep we remember that too. But more generally you can set out of a 100 mile journey with your diesel saying its range is 360 miles and arrive at your destination with only 120 miles range left. And everyone knows if your down to only 20 miles left it can jump from 20 miles range to 7 miles range in a couple of miles, such is the inaccuracy of the guess on your MPG and the float in your tank. |
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Post by Bentley on Dec 5, 2023 17:55:52 GMT
If charging stations were as easy to access and numerous as fuel stations then range anxiety would just about disappear.
That’s not going to happen soon
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Post by jonksy on Dec 5, 2023 18:59:43 GMT
Diesel drivers could see huge impact from landmark High Court emissions scandal hearing this week
Yep we remember that too. But more generally you can set out of a 100 mile journey with your diesel saying its range is 360 miles and arrive at your destination with only 120 miles range left. And everyone knows if your down to only 20 miles left it can jump from 20 miles range to 7 miles range in a couple of miles, such is the inaccuracy of the guess on your MPG and the float in your tank. And we just pull up at ANY GAS STATION AND FILL UP.
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