Ouch! BYD Seal 6 Touring takes a hammering in this review!

Yeah personally I thought the DMi system had its problems. The DMi series is more like EVs that have a range extender attached to it rather than a true PHEV, which is especially apparent with the non-turbocharged engine option. The power to weight is pretty horrendous once the battery goes flat, and this is more so a problem on a touring model which is expected to (tour), so while it might work for the Sealion 6/ Seal U / Song Plus since its a SUV, it really gets annoying on a wagon which is supposed to have better high speed performance.

DM-i system works both in series and in parallel, for high speed performance it prioritizes parallel mode and for that you need a more powerful engine, the mistake here is using the non turbo engine instead of the turbo one, but given the price of this in China I can understand why the did it this way.

Just one review. Many other reviews are very positive.

Other manufacturers do it the same way. My brother has a Kia Ceed PHEV wagon (1.5L petrol engine with 105HP and 61HP electric motor with a combined power of 141hp) So not something "BYD specific"

I almost waited for this instead of getting my Seal - but that's when I thought it would be full electric. I don't know why they're bothering with DMi.

I disagree. I brought up power to weight, which is my biggest issue with the DMi system. The KIA you mentioned has a curb weight of around 1.5t VS 1.8t for the Seal 6 Touring, which gives a power to weight ratio of 14.3kg/hp compared to 18.7kg/hp. The KIA also has an actual transmission compared to a single gear system, which generally means it's more adaptable to cruise and supply engine power at any speed, though I'm not entirely sure what the final ratios are. This generally means the DMi performs horrendously at long hill climbs without battery as well as high speed cruises, which is kind of what you expect a wagon to be good at. But efficiency wise, I'm very sure the DMi beats the KIA.