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Does the T8 need to use plugin to charge battery fully?

8.1K views 18 replies 10 participants last post by  VolvoUhu  
#1 ·
noobie here, I'm considering moving from a prius to a used t8 2017- 2018 range? I have a dumb question around whether i need to use the charge port to fully leverage the battery or not? I street park in the city and have a charge port at work. Since I'm no longer going to work as of now, I will not likely be using the charger. Was wondering what I'm missing out on if I only use that feature once in a while?


additional question on folks with battery life experiences. the prius hybrid system is fairly solid. was wondering if folks experience similar reliability with t8s? I'm def considering cars with CPO or will buy a warranty based on my readings here. However curious if folks have have reached the 100k-200k club with the t8?

tx
 
#2 ·
You can change to "charge" mode to let the engine charge battery. However it consumes more fuel than in hybrid mode and just driving mostly with engine.
It is only useful when you want battery to do power mode for quick and long acceleration.
You can charge on 110V outlet with the charge cable come with the car. It takes overnight to charge to full but still useful.
 
#3 ·
If you never charge it, the EPA rating is 27 mpg. Charging it, you can get over 50 mpg in city driving (62 mpg per EPA).

https://www.fueleconomy.gov/feg/noframes/39383.shtml

Also, if you don't charge it, you won't be able to precondition the cabin (warm or cool it remotely).
 
#4 ·
If your goal is to leverage the overall economy, then using the charge feature on the car will not be the way to go. As said above that will use more fuel energy then you gain in electric energy. It's really so you can feel cool driving quite up to someone's house after you depleted the range. You can certainly just drive it like another hybrid, the plug is is more of an added option than any sort of necessity. You also always have all power available, so the 400 rating is not limited to when you have a battery charge.

The CPO warranty is unlimited miles and does include the T8 battery, so not a bad way to go. I haven't seen any 100k cars yet, but they'll come. I believe time more than miles will be the limiting factor. I know there is a whole market for selling used batteries for the Prius that is much less expensive than buying a whole new battery for a 10 year old car. I imagine that market will continue to grow. I don't know for sure what differences in batteries there are between the Volvo models, but they are all the same platform... I wonder how interchangeable they are. Anyone have any ideas?
 
#5 ·
thanks for all the info. I was hoping it to be more like the prius prime model where the hybrid system re-captures quite a bit of energy back and use just that. I live in a condo and street park so this overnight charging with cable is not really feasible. since everyone is WFH, i'm not as motivated to work out of the office either to take advantage of the charge port.
 
#8 ·
there are some videos mentioning that the 2020 version is on the 3rd generation of the battery pack. I was wondering if there are more info on the 2018-2019 versions? I guess gen2? was it a different battery composition? also for what ever reason, the EPA fuel estimate for 2018 seems to be WAY better than 2019 and beyond. what changed
 
#9 · (Edited)
I had a 2016 T8 and now have 2020 T8. Driving without charging is an option for me. My electricity rates are around 26 cents/kWh in the summertime, which means its more cost efficient to use fuel when its below $3.70/gal. I've driven both cars on gas only and its still a good experience. In traffic, the battery will capture energy from braking and give an assist when taking off. It can be fun to switch between D and B modes while driving. B mode will apply more regen when the pedal is released, like engine braking in a manual versus automatic transmission. Switching back and forth when appropriate can put more energy in the battery.

When I drive the Jeep and BMW I still do a lot of coasting and light braking out of habit. I chuckle to myself and try to drive "normal" but it can be hard to break the habit.

Even when driving 80-85 mph from Huntington Beach to San Diego XC90 mileage seems to stay in the 20s. Pretty good for a big SUV, my 1999 Cherokee struggled to get 20 mpg doing 65-70 not so long ago. My 2018 Grand Cherokee Ecodiesel does great on fuel, routinely returning numbers around 30MPG at 70-75 mph. When given the choice, I reach for the Volvo keys over the Jeep. Jeep suspension tech hasn't changed much in the last 25 years. Even with air suspension and 20" wheels on both, the volvo is just better by a wide margin. The Jeep feels clumsy in comparison.

Here in California the carpool sticker is worth every penny of the T8 option cost.
 
#11 ·
2016-2017 T8 battery is 9.2KWh, 2018 T8 is 10.4KWh. This explains the battery range increase, from 14 mile to 19 mile (which is more than increment of battery capacity, I don't know why).

2019 battery is same but fuel tank is increased to 18gal. And ICE engine is a few HP less.

I don't know why 2019 EPA number is slightly less though. EPA number from the certification process and we never know why.
 
#12 ·
I commute 18.4 miles to work one way and often arrive with a few miles of electric range in the battery. If I trigger the ICE on the freeway I'll usually arrive with 5 miles left in the battery. In the 2016 The battery wouldn't have any range left unless the ICE kicked on for freeway use.
 
#16 ·
I've got 5K miles on my 2021 XC90T8. I always drive it in "B" (brake regen) mode. When driving in the foothills of the blue ridge mountains, I can get the battery to go from -- miles range to 3, just via long decels downhill. I would imagine if one was driving on a very long descent down a large mountain it would be possible to charge the battery more while driving. My normal routine is to plug it in every day at work. That way I can precondition it before I leave for home, and the first 20 miles of my 33 mile commute are in pure mode on electric power, most of which is at 65 to 70 mph. Nice and quiet as well.
 
#17 ·
noobie here, I'm considering moving from a prius to a used t8 2017- 2018 range? I have a dumb question around whether i need to use the charge port to fully leverage the battery or not? I street park in the city and have a charge port at work. Since I'm no longer going to work as of now, I will not likely be using the charger. Was wondering what I'm missing out on if I only use that feature once in a while?

additional question on folks with battery life experiences. the prius hybrid system is fairly solid. was wondering if folks experience similar reliability with t8s? I'm def considering cars with CPO or will buy a warranty based on my readings here. However curious if folks have have reached the 100k-200k club with the t8?

tx
If you're unable to charge you'll be fine - it'll just behave like you're accustomed to with your Prius. It won't give you the additional benefit of extended Pure (electric drive). The upside of a plug-in hybrid is that it gives you electric range unlike a regular Prius which only uses it's batteries for short distances at low speeds, to accelerate, or will regenerate while coasting or breaking. In the T8's case you'll get all of that same behavior and benefits PLUS the added distance that an 9-11kWhr battery gives (depending on which model year you pick which translates into 17-20+ miles on electric only and at up to speeds of 75mph. For example, when I was commuting to work I was averaging >120mpg by charging at home and at work. In actuality I was driving during the week 100% electric and on weekends would use some gas for longer distances (like going to bike races, skiing, etc which often resulted in gas use and gave me an MPG). I could often go 1300mi without refueling. Now my drive is far more rural, longer distances, mountain driving and I'm in the 30-60mpg (closer to 30 when I'm unable to recharge and 50+ when I use am able to recharge between each leg of a drive and use hold to preserve the battery for when it's optimal to use it).

In your case without plugging in, it'll just be a big Prius. In city driving you'll get far more benefit even without recharging it than on highway. It was the case for us during our vacation with our T8 across Europe during our European Delivery. In EU we couldn't recharge due to US plugs being the older Type 1 vs. Type 2 Mennekes used across Europe. While in Europe we drove 3000mi and as a regular hybrid (Prius style) it was great - better than without. We averaged ~29mpg over those miles and the only plug in time it had during the whole trip was the initial charge the Factory Delivery Centre provided before we left the factory. Others mention using the "recharge" function which uses the ISG to recharge the battery. It does consume more fuel to do so (additional drag from ISG - think dynamo) and there are times where it's beneficial to use it and times when it's not worth it due to the mpg penalty of using it to charge the battery. You'd have to gauge it yourself to decide whether there's a benefit or not depending on your driving cycle/pattern.

As for reliability... it's a solid system. Volvo's had plug-in hybrids for nearly 10yrs now with the first diesel hybrids (V60). It was especially popular in The Netherlands and other EU countries. The driving experience of a T8 is fantastic with a great blend of what a full electric, hybrid, and gas powered car can offer.
 
#19 ·
I think coming from a Prius you'll be pleased with a T8 in that it's a far more capable, comfortable, safe, and fun vehicle. I can only say that from having been a passenger in a Prius and comparing that experience to enjoying our XC90 T8. Something else I forgot to mention is it's also possible to just recharge your T8 from regenerating energy light braking and coasting (especially when going down hill). I had managed to do that a few times during our EU trip by toggling the Hold button to capture and store energy in the battery without using the ISG to burn extra fuel to store it as electricity. In fact when we first picked up our T8 you could only Recharge using fuel up to 33%. Today it's closer to 95% (Volvo updated the limit via software a couple of years ago). Around town you'll love being 100% electric if you are able to plug in. You should download a couple of apps to browse around where you live to see there are EVSE nearby. The best part is there are several free EVSE (at least where we are). Municipality even offers free charging at parks, city hall, and other city areas. A lot of shopping areas also offer free juice. I've come to expect that more than $2/session is robbery - that's my threshold based on options for us. At home it's $0.73 to charge a depleted battery (depleted is relative since Volvo locks out about 30% of total capacity).