As to the battery in likes of Skoda, mine is from April 2024 with 30,000 miles and on full charge it doesn’t go above 282 anymore. Went well above 310 last summer
That’s…. not how you measure range/capacity. The number you’re quoting is dynamic. If i take my GTE and blast it all day long, and then go refill, it will give me a total range of maybe 300 miles on the petrol engine. It’s currently 420 miles. That doesn’t mean the petrol engine degraded, it means that the computer gives me a range estimate based on my last “x” miles driven. The Enyaq has the same battery (just additional cells) as the ID3 LR that degraded by 8% over 100k miles. The same “lost 20mpg by going E5” stuff again.
My reference was to the charging: I charge at home. Normally I charge up to the 80% limit. Occasionally I do charge to 100%. In those cases, when I charge all the way to 100% I used to see 310 miles last year, when fully charged. Now it doesn’t go above 282. I have shared a corresponding picture in one of the chats on this forum recently. Hope it clarified my point. N.B. my driving patterns are consistent – I am far beyond the age of GTE like driving.
That’s my point.
That’s not how it works. You need to measure how much actual electricity goes into the battery, in total. That means you have to drive it all the way 0%, and charge fully to 100%. The amount of electricity going into your battery is what describes degradation.
The number your display gives you is entirely meaningless. That numbers is calculated based on a thousand things, all variable from day to day (traffic, temperature, weather etc pp). As i explained with my GTE example. Currently a 100% tank, according to the GoM (guess-o-meter, colloquially called like that for a reason), nets me 420 miles range. I can show you a picture of it. Now, tomorrow i show you a picture where a 100% tank nets me 340 miles range. Same with our battery pack – it right now shows 29 miles fully charged. That’s because i drove a bit like a pig last night before charging. Today i’ll drive a bit more.. “adjusted”, and the battery will show 35 miles range fully charged (which is our average). In fact, here’s a fun one: i have pictures of the car indicating 49 miles electric range straight after charging. That’s basically impossible, more than 10 miles more than even VW advertises. It just adjusted its “range-guess” based on available data, based on my average energy consumption of the last journeys.
But, here’s the funny thing. We always charge the same amount of electricity, more or less (obviously depending on what’s still in the pack).
Will your pack have degraded? Sure. But it doesn’t degrade more than 10% over the course of a year. That’s just not happening unless your pack is damaged, in which case your car would notify you.
edit: if you’re really curious, after the next long drive, don’t charge it – drive it up and down the road until you maybe have 1-5% battery left (or less if you feel adventurous) – then charge it to 100% in one go (might need to “boost charge” if you’re on Octopus Intelligent Go etc). Check your charger afterwards, see how many kwh it pumped into the battery. Add 5kwh (that’s how much the Enyaq battery reserves for safety – so 0% means there’s 5kwh left in the pack) to that number, and you get your current total capacity.
Assuming of course, that your charger tells you how much it charged, i’m only familiar with our Easee – i’d assume that’s a feature on all chargers though.
edit2: for funsies.
I know that that’s a full charge. 10.45kwh, the GTE has 10.9 usable from factory. We lost 0.45% of capacity over 2.5 years (the majority of drives are electric, as seen by 147kwh in June alone). And we don’t take care of it either, as such – we charge to 100% every time, recently also quite a few times pre-conditioned on the charger. Car has done now 16k miles.
Prior: SEAT Ateca Xcellence Lux 1.5 TSI DSG MY19, VW Golf GTE PHEV DSG MY23
Current: Hyundai Ioniq 6 Ultimate
Next: we'll see what's available in 2028.