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BYD Sealion 6 DM-i - is it worth buying it to replace an ICE car?


4myr

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I am considering buying the BYD Sealion 6 PHEV to replace my 8 yr old Mazda 3. This car is also known as Song Plus [China] or Seal U DM-i [Europe].

Would like to hear your own experience or additional knowledge you gained from other sources to improve my decision making.

 

Reasons to consider the BYD is the 80km [considering to keep 25% SoC for HEV fuel efficiency] pure EV range for daily/weekly city trip.

I have excess solar power and can charge at home with a portable charger, as my daily commute is less than 50 km.

 

For longer weekend/vacation trips I will not have range or charging station anxiety, having a 60L fuel tank and around 25km/L fuel efficiency as long as I drive below 110 km/hr and keep the battery charged above 25%.

My yearly mileage is around 7-10,000 km.

 

The price vs value is the biggest attraction. The 2-wheel drive model Dynamic is sold for 939,900 Thai baht.
Other Chinese manufacturers e.g. MG have lowered their PHEV prices accordingly, however the value proposition of BYD is better.  

 

I am intending to keep the BYD as long as I can, for at least 5-6 years.

 

What are the unknowns right now for me:

  • maintenance costs.
    I read on a Australian site cost of around 200 USD / year over the first 5 years. The ATTO 3 BEV maintainance package of Rever of 8 years is worth 120 USD per year. I assume maintenance for a PHEV is more expensive than a BEV. Next month I'll hear from BYD.
  • insurance costs.
    I read that EV insurance in Thailand is twice as expensive compared to ICE cars
  • how many years software and security updates are warrantied?
    BYD has many models/variations worldwide to keep up to date. Will BYD behave like Samsung for smartphones or more like Apple in terms of software updates? Will the car management firmware still work after 8 years, except that [security] bugs will not be solved. 
  • after 8 years or 160,000 km battery warranty of 70% battery health, the car will have lower pure EV range. I assume it should keep it's fuel efficiency as a hybrid, as long as the SoC is above 25%? So the PHEV becomes more or less a HEV, after gradual deterioration of the battery.
  • the resale value/depreciation after 5-6 years.
    I'd guess nobody can answer this, except within China. As the Song Plus is already in the market for several years. The DM-i hybrid technology is on it's 4th iteration, and the 5th iteration has recently been launched in China regaining it's ICE power efficiency crown of 46% from Geely  [Seal 7 DM-i]

 

Things in the news or online reviews that have bothered me:

  • on durability: e.g. mold found in the interiors of stored cars in Europe, exterior paint peeling off. Are these issues included in the car warranty?
  • on suspension level: too soft I read.
    I will need to adapt from the sporty and direct steering nature of the Mazda. I also read reviews that after changing tires and suspension the BYD's suspension behaves better. I also read of motion sickness of some passengers in the back due to the soft suspension. Fortunately in Thailand the max legal speed is 90 km/h and 120 km/h on toll roads. I will need to test drive this on the highway to find out myself.
Edited by 4myr
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i'm sorry, but i can't answer your questions because i don't own a phev nor a byd. hopefully, other forum members can offer more help.
 
that said, i'd like to share why a fully electric vehicle (bev) is the choice for me personally:
  • with a phev, you get both the pros and cons of electric and combustion engines. this includes maintenance costs, fuel and electricity expenses, driving comfort, noise, vibrations, and emissions.
  • the 18 kWh battery in the byd sealion 6 is put under considerable stress, especially at high and low battery levels. frequent charging cycles can also lead to faster degradation.
  • the higher engine power in the byd sealion 6 comes from the electric motor, offering 145 kW of power, while the 1.5-liter combustion engine provides just 72 kW. when full power is required, the (cold) ice engine has to "spring in", may creating noticeable noise and vibrations.
  • to be efficient and perform well on long trips, a phev needs to be charged regularly, the same as a bev.
 
i drive about 400 km on day trips each month, and i take two longer road trips a year (lasting 2 to 6 weeks) covering 2,000 to 4,000 km. typically, i (we need to ) take a 30-minute break every two hours, which gives me plenty of time to charge the battery, and i'm also never in rush on long journeys ...
 
for some, a phev might be a better fit than a bev. however, i'm not sure all phev buyers fully consider also the potential drawbacks ...
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BYD have a good reputation, I doubt they got anything wrong on the car.

 

I like that they have the most power on the electric motor.  I had a PHEV Mercedes in 2018 where most of the power was on the ICE and the electric only range was about 20km.  I could just about get away with a trip to a restaurant, picking up a couple of friends and the return journey, but I was frequently using the ICE.

 

The BYD will have excellent performance on the electric motor, once the battery is exhausted, say on a long journey, your performance will drop.  There is probably an option to use the petrol engine to charge the battery (there was on the Mercedes), I never did because I considered it inefficient.= to use petrol to charge the battery.

 

So if your usage pattern is mostly journeys of under the electric only range with the occasional long distance trip, then I think it is perfect for you.

 

And if you are anything like me, a PHEV will give you the confidence to go fully BEV next time.

Edited by JBChiangRai
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Looked at several video reviews of the sealion 6 and all said was a great car with the suspension just being a little soft on some conditions , but easy to replace. Said interior materials were good quality as was driving comfort and range etc 

Also seen a review of sealion 7 and it's even better seemingly and has a bit of a X1/ urus type shape to it .

Will be changing car in the next year and will definitely be checking out these options . Also the reviews said the mid range model of the 6 was the best option out of the three models available. 

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On 9/24/2024 at 8:25 AM, motdaeng said:
i'm sorry, but i can't answer your questions because i don't own a phev nor a byd. hopefully, other forum members can offer more help.
 
that said, i'd like to share why a fully electric vehicle (bev) is the choice for me personally:
  • with a phev, you get both the pros and cons of electric and combustion engines. this includes maintenance costs, fuel and electricity expenses, driving comfort, noise, vibrations, and emissions.
  • the 18 kWh battery in the byd sealion 6 is put under considerable stress, especially at high and low battery levels. frequent charging cycles can also lead to faster degradation.
  • the higher engine power in the byd sealion 6 comes from the electric motor, offering 145 kW of power, while the 1.5-liter combustion engine provides just 72 kW. when full power is required, the (cold) ice engine has to "spring in", may creating noticeable noise and vibrations.
  • to be efficient and perform well on long trips, a phev needs to be charged regularly, the same as a bev.
 
i drive about 400 km on day trips each month, and i take two longer road trips a year (lasting 2 to 6 weeks) covering 2,000 to 4,000 km. typically, i (we need to ) take a 30-minute break every two hours, which gives me plenty of time to charge the battery, and i'm also never in rush on long journeys ...
 
for some, a phev might be a better fit than a bev. however, i'm not sure all phev buyers fully consider also the potential drawbacks ...

i agree with you on only maintenance costs, that for phev  it’s higher than bev and ice.

 

i owned for 5 years one of the first phev’s - the chevy volt subsidized by obama i. the ice engine can work as range extender and in parallel. most of my commute i use ev mode and i charge 2 times a day. after 5 years battery health was 88%. btw the maintenance costs of my volt was lower than my previous ice car and this is due to the quality of the car. 
 

 only complaint i had is the noise when soc battery is low and the ice must do the heavy lifting on its own. that’s why byd like to keep the soc 20-30% so you can drive quietly in hev mode and the ice engine works primarily to charge the battery. byd seems to do a great job in canceling the ice noise in range extender mode. if you drive faster than 110 the ice charger cannot keep up with the battery drain, so then the ice needs to do the job on its own in the end.

 

with a bev you don’t have these speed limitations, on the other hand the legal max speed is 90km on most roads here in thailand.

 

i prefer speed limitations over bev limitations and frustrations. with regards to 30-45 min dc charging vs 10 min fueling,  where you have to plan your trips on the availability of 125kw dc chargers. suppose you wanna tour around for several weeks on koh lanta or koh samui where no dc charger is to be found. how about the charger app low response times during rush hours in the weekends and downtime of some remote chargers due to mediocre maintenance

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On 9/25/2024 at 8:49 AM, newnative said:

     My Thai spouse and I have booked a new Sealion, scheduled for delivery sometime in October.  He drives, I don't in Thailand.   We took a test drive and he was impressed with how it drove.  I liked the ride comfort, the seat comfort, and the excellent seating position and view out the front.  The back seats were also comfortable and there was a lot of leg room for the Thai family members we sometimes have in the car.  The ride seemed fine to us but I would suggest taking a test drive to see how you like how it drives.

    

thanks for sharing. yes i will plan a test drive.

 

the car is much bigger than my mazda, however the boot space is a tiny bit larger. i entered a demo car that had a long trip on a very hot day. i sat in the back and i could feel the heat permeating through the cover of the glass roof. the back ac outlets could not cool my head, only the front middle ac outlets. i had to increase the ac volume to feel the ac working

 

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Glass roofs on the move are cooled by airflow over the roof and are not a problem.

 

They are a problem when parked in the sun, they get hot and radiate a lot of heat onto your head.

 

i sat in the back of a Seal test drive and had the same issue, I’ve not noticed it in 9 months of ownership but I rarely park in the sun and if I do I remotely start the air con before returning to the vehicle.

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