Fast charging slows down earlier than it used to
2024 Rivian R1S Dual-Motor, about 14,500 miles. On road trips the car used to hold a higher charge rate longer. Now it starts tapering sooner even when the pac…
EV & hybrid
Gen 3 Prius rough cold start plus slow coolant loss
Older Prius has developed a rough shake for a few seconds on some cold starts and the coolant level seems to be dropping slowly. I don't want to assume the wor…
2025 Porsche Macan — eV has plenty of main battery but shows a 12V warning
Traction battery is charged, but a low-voltage warning appeared after the car sat overnight. I know the small battery can still immobilize an EV. What informat…
Anyone else: Fast charging slows down earlier than it used to
On road trips the car used to hold a higher charge rate longer. Now it starts tapering sooner even when the pack is warm. Could this be charger-side variation,…
2023 Rivian R1T Quad-Motor — how are you estimating real battery degradation?
Dash range changes with temperature and driving, so I'm looking for a better way to judge battery health. What data do you trust—usable kWh, charging energy, s…
ShiftCollector47Community StarterSep 2, 20262023 Rivian R1T Quad-MotorCentral Florida6 replies0 helpful
2023 Hyundai Ioniq 5 — how are owners measuring real battery degradation? — buyer question from New York
2023 Hyundai Ioniq 5 Limited, about 18,000 miles. Displayed range moves too much with weather and recent driving to be a useful health metric by itself.
2022 Tesla Model 3 Long Range — anyone else: Low-voltage battery warning after software update
A software update finished overnight and this morning I got a low-voltage battery warning. Main battery is charged. Before scheduling service, is there anythin…
2022 Toyota RAV4 — hybrid fuel economy dropped with no warning light — Washington DC owner question
2022 Toyota RAV4 Hybrid XSE, about 24,500 miles. Same commute and driver, but average MPG is down noticeably. Tires are properly inflated. What hybrid-specific…
2022 Tesla Model 3 — fast charging tapers earlier than it used to
2022 Tesla Model 3 Long Range, about 82,500 miles. On comparable road trips the charge rate now starts tapering sooner. I am trying to separate charger sharing…
2022 Ford Maverick — preventive cleaning of the hybrid battery cooling fan — buyer question from Miami
2022 Ford Maverick XLT Hybrid, about 37,000 miles. The car carries pets and sees dusty conditions. Is inspecting or cleaning the battery cooling intake/fan a r…
Need advice: Rivian 12V warning: drive to service or request mobile help?
Got a 12V-related service warning and the truck otherwise wakes and drives normally. For people who've dealt with low-voltage issues, did you risk driving to s…
2022 Toyota RAV4 — hybrid fuel economy dropped with no warning light
2022 Toyota RAV4 Hybrid XSE, about 40,500 miles. Same commute and driver, but average MPG is down noticeably. Tires are properly inflated. What hybrid-specific…
EV tires wearing much faster than expected
2022 Tesla Model 3 Long Range, about 78,000 miles. Rear tires are wearing noticeably faster than I expected even though alignment is supposedly okay. I know we…
2013 Toyota Prius — hybrid fuel economy dropped with no warning light — Los Angeles / diagnosis
Same commute and driver, but average MPG is down noticeably. Tires are properly inflated. What hybrid-specific data would you inspect before blaming the high-v…
2025 Lucid Air Pure — fast charging slows down earlier than it used to
On road trips the car used to hold a higher charge rate longer. Now it starts tapering sooner even when the pack is warm. Could this be charger-side variation,…
1972 Chevrolet C10 — no crank with full dash power, then it starts later
Twice I have had full lights and accessories but no crank. After waiting a few minutes it starts normally. Battery terminals look clean. What would you want to…
2024 Polestar 2 — how are owners measuring real battery degradation? — buyer question from Miami
2024 Polestar 2 Long Range Dual Motor, about 39,000 miles. Displayed range moves too much with weather and recent driving to be a useful health metric by itsel…
CanyonEnthusiastCommunity StarterAug 28, 20262024 Polestar 2 Long Range Dual MotorMiami6 replies0 helpful
2013 Toyota Prius — preventive cleaning of the hybrid battery cooling fan
The car carries pets and sees dusty conditions. Is inspecting or cleaning the battery cooling intake/fan a reasonable preventive job when the service procedure…
TrailMechanicish660Community StarterAug 28, 20262013 Toyota Prius ThreeWashington DC13 replies0 helpful
Anyone else: Model Y low-voltage warning before a road trip
Low-voltage battery warning appeared and I have a trip coming up. Main pack is fine. I don't want to get stranded over the small battery—what would you conside…
TowTraveler19Community StarterAug 25, 20262024 Tesla Model Y Long RangePennsylvania11 replies0 helpful
Need advice: Low-voltage battery warning after software update
A software update finished overnight and this morning I got a low-voltage battery warning. Main battery is charged. Before scheduling service, is there anythin…