Now on TWO occasions found car completely without power after sitting unused for 2 or 3 days. On both occasions car plugged into Level 2 charger overnight (this is a plug in hybrid model). Required jump start after having to use emergency key to get inside. After jumpstart, received numerous propulsion system errors as well as on first incident, errors saying SOS communication system disabled. Dealer replaced TCAM battery with fresh one stating that computer tries to do updates and drains battery, and dealer lot has occasional dead cars with similar issue. On second incident, car moved into -€œturtle-€ limp home mode with critical 12V charging messages. In both instances, car was in a conditioned garage around 48 degrees. Hybrid battery was 100% charged in both cases. Concerned there is a batter drain due to TCAM or main software systems. This is more than inconvenience - this could be a real danger to have a car that may not start reliably after sitting for 48 hours, such as an airport or other setting where getting help is difficult. Limp home mode is driving hazard. There are multiple instances of this on Volvo websites that seems to impact multiple T8 models with a plug in hybrid power train and Google AAOS infotainment/car system architecture. Please help!

- Edina, MN, USA

While switching lanes the vehicle became unresponsive to throttle input, momentarily leaving me floundering in the new lane unable to accelerate, with cars quickly approaching. This was then followed by a jolt of power after pumping the gas pedal and then normal acceleration behavior. There were no dashboard warnings or sounds to indicate any driver assistance systems were activated. This has occurred once before (at ~1000 miles) but has not been inspected by the dealer. In both cases the incidents were preceded by slowing down for traffic before switching lanes.

- Newton, MA, USA

I have a 1 month old 2023 XC60 T8 phev recharge extended range with 1250 miles on it. I was driving without any issues for the past 1 months. I got a turtle icon with the check engine light on constant when I started driving today. The car had pulled back while driving and there was substantial diminished power, and could be dangerous in the wrong circumstances. I called Volvo and they explained not to drive the car and towed the car to the nearby Volvo dealership. Waiting on diagnosis 2 days now. I've now noticed other vehicles of the same type are having the same issues. This does not seem to be normal for a cars operation to have random diminished power. Website showing this to be a problem with these models from different years without any definitive resolution: https://www.swedespeed.com/threads/2022-xc90-recharge-extended-range-turtle-icon-check-engine-light.657482/

- Kenvil, NJ, USA

The headlights malfunctioned two weeks after I purchased the vehicle. The center control panel electronics that controls heating and cooling, the phone, etc failed suddenly and without warning while I was on the highway. There have been multiple problems with this vehicle since I purchased it on September 19. It has been in the shop for about 15 days. A propulsion system warning appeared without warning while I was driving the car. The battery drained for unknown reasons while plugged in to charge. This is not a safe car. It is controlled by an electronics system and software that are not reliable, leaving me at risk of being in an accident or stranded somewhere. I have read that some of these vehicles go into "turtle mode" and won't go over about 5mph after the propulsion system warning has appeared. I do not want to be driving this on a highway and lose all acceleration. I do not want to stop at a rest stop at night and have my car not start. There is clearly something quite wrong with the operating software and electronics that this vehicle depends upon. It is quite apparent that Volvo's nascent software development team has adopted the "move fast and break things" philosophy espoused by many software companies. The key distinction here is that when my computer software crashes, I am sitting at my desk chair. With an automobile, the crash could very well happen at 65 mph or with me stuck in some remote location. The idea that Volvo would roll out a product so miserably deficient of basic capabilities is mendacious.

- Simsbury, CT, USA

Four times in the last five days as I was braking for a red light or braking as I entered a drive thru, the engine surged and revved to between 3000 RPM and 4000 RPM. I had to use all my power to brake the car and I then put it into Neutral, or shut off the car. Within a few seconds or upon restarting the RPMs were back to normal. I DID NOT push on the accelerator by mistake. The car only has 300 miles so I took it to the dealer. The engine had no codes and they had me drive around with the Service Manager but all was fine. On my way home the same surging, increased engine revs happened again. Luckily I-€™d read a lot about -€œunintended acceleration -€œ so I knew enough to just brake firmly and place the transmission in neutral.

- Clifton , VA, USA