Jaecoo J7 PHEV

[Terence2112]

On 8/8/2025 at 4:37 PM, steveting99 said:

@Voodooman The following article explains how the Super Hybrid System (SHS) on the Jaecoo J7 PHEV works: https://paultan.org/2025/08/08/jaecoo-j7-phev-explained-hybrid-with-big-battery-nearly-900-units-sold-omoda-c9-phev-launching-soon/

Essentially below 70km/hr, the J7 is purely driven by the electric motor. Between 70km/hr to 80km/hr the 1.5L turbocharged four-cylinder petrol engine kicks in to assist the electric motor. This is parallel hybrid mode. At above 80km/hr, the electric motor dis-engages and the 1.5L engine drives the wheels. This is similar to what Honda implements in their e:HEV system. Think of Freed or CR-V hybrids.

The high voltage LFP battery pack (18.3 kWh from BYD) always stays above 20% State of Charge (SoC). Once the high voltage battery pack gets to 20% SoC, the 1.5L engine kicks in to re-charge as it's needed to power the electric motor below 70km/hr. This is series hybrid mode operation. 

Claimed combined fuel efficiency is 4.9L per 100 km with the high voltage battery pack SoC at 100%. The fuel efficiency drops to 5.99L per 100km once the high voltage pack drops to 20% SoC. @Terence2112 can advise if this is the case. 

To drive the J7, two conditions have to be met:

(1) The high voltage battery SOC is above 20%; and

(2) Some fuel in the tank.  

Yes, whatever that is explained in the article is correct and factual. EV mode takes priority if the SOC is above 30%, regardless of the speed. 

[steveting99]

On 8/8/2025 at 11:48 AM, Terence2112 said:

Yes true. 
In terms of tech, the like for like is the BYD SL6. 

Currently there's no thread and information for the BYD Sealion 6 DM-i to compare against the Jeacoo J7 PHEV.

Will open up soon if no one has done so.

[Ake109]

On 8/8/2025 at 8:39 AM, steveting99 said:

The poor ride and comfort of the Jaecoo J7 means it deserves a $10k discount from the competition (i.e. BYD Sealion 6 DM-i). 🙃 Or around $200k region.

I went to test drive the SL6 and the J7. I really dont find the J7's ride to be bad as what the reviewers say. Granted the test drive route around Commonwealth isn't bumpy and patchy and I didnt get to high-speed corner because Singapore test drive.

[Kookies]

On 8/8/2025 at 4:37 PM, steveting99 said:

@Voodooman The following article explains how the Super Hybrid System (SHS) on the Jaecoo J7 PHEV works: https://paultan.org/2025/08/08/jaecoo-j7-phev-explained-hybrid-with-big-battery-nearly-900-units-sold-omoda-c9-phev-launching-soon/

Essentially below 70km/hr, the J7 is purely driven by the electric motor. Between 70km/hr to 80km/hr the 1.5L turbocharged four-cylinder petrol engine kicks in to assist the electric motor. This is parallel hybrid mode. At above 80km/hr, the electric motor dis-engages and the 1.5L engine drives the wheels. This is similar to what Honda implements in their e:HEV system. Think of Freed or CR-V hybrids.

The high voltage LFP battery pack (18.3 kWh from BYD) always stays above 20% State of Charge (SoC). Once the high voltage battery pack gets to 20% SoC, the 1.5L engine kicks in to re-charge as it's needed to power the electric motor below 70km/hr. This is series hybrid mode operation. 

Claimed combined fuel efficiency is 4.9L per 100 km with the high voltage battery pack SoC at 100%. The fuel efficiency drops to 5.99L per 100km once the high voltage pack drops to 20% SoC. @Terence2112 can advise if this is the case. 

To drive the J7, two conditions have to be met:

(1) The high voltage battery SOC is above 20%; and

(2) Some fuel in the tank.  

Is the battery sufficient to power a drive up Cameron Highlands ?   Otherwise the 1.5 L ICE will have to work all the way to generate the electricity to then power the electric motor ?

[inlinesix]

On 8/12/2025 at 6:07 PM, Kookies said:

Is the battery sufficient to power a drive up Cameron Highlands ?   Otherwise the 1.5 L ICE will have to work all the way to generate the electricity to then power the electric motor ?

It can be a parallel and series hybrid.

The wheel can be driven by electric, ICE or electric+ICE.

To your question, it is likely to be electric+ICE from midway onwards.

[Benarsenal]

On 8/12/2025 at 6:07 PM, Kookies said:

Is the battery sufficient to power a drive up Cameron Highlands ?   Otherwise the 1.5 L ICE will have to work all the way to generate the electricity to then power the electric motor ?

Probably not.

[steveting99]

The following graphic shows how Chery / Jaecoo implements their HEV mode.

 

The above is from J7's official Malaysian brochure.  

[Ake109]

On 9/1/2025 at 2:48 PM, steveting99 said:

The following graphic shows how Chery / Jaecoo implements their HEV mode.

 

The above is from J7's official Malaysian brochure.  

This is good detail. No one at the SG dealer could explain to me in this detail.

Curious if the Sealion 06 is using the same logic. I was told the ICE generates mostly power to let the electric motor drive the car (like a ship's turbo electric powerplant). Would be nice if local reviewers would go into these kind of technical details instead of the usual oh cabin is black color, taillights very nice, rim is 19 inches....zzzzzz f**k lah, me and Ah Kow, Ah Seng got eyes ownself see such things.

So that 352hp, is only while 70-80kph and probably not even that since part of the ICE output will be generating electricity as well. Although having driven this car, its power is good enough (can spin front wheels easily)

Edited September 2, 2025 by Ake109

[steveting99]

On 9/2/2025 at 1:06 PM, Ake109 said:

This is good detail. No one at the SG dealer could explain to me in this detail.

Curious if the Sealion 06 is using the same logic. I was told the ICE generates mostly power to let the electric motor drive the car (like a ship's turbo electric powerplant). Would be nice if local reviewers would go into these kind of technical details instead of the usual oh cabin is black color, taillights very nice, rim is 19 inches....zzzzzz f**k lah, me and Ah Kow, Ah Seng got eyes ownself see such things.

So that 352hp, is only while 70-80kph and probably not even that since part of the ICE output will be generating electricity as well. Although having driven this car, its power is good enough (can spin front wheels easily)

@Ake109 Have been told by the SE of one BYD's dealers that the Sealion 6 DM-i hybrid system works the same way as Chery's Jaacoo J7. So expecting most of the PHEVs from China EV and Battery Co. to be similar. I.e. Geely, GAC, SAIC, Changan, Lync & Co., Zeekr, Li Auto, Dongfeng, etc.  

[Ake109]

On 9/4/2025 at 5:34 PM, steveting99 said:

@Ake109 Have been told by the SE of one BYD's dealers that the Sealion 6 DM-i hybrid system works the same way as Chery's Jaacoo J7. So expecting most of the PHEVs from China EV and Battery Co. to be similar. I.e. Geely, GAC, SAIC, Changan, Lync & Co., Zeekr, Li Auto, Dongfeng, etc.  

I am not informed enough to flat out say that the SE is wrong.

But you and I both know how well informed the typical SG car SE is, when it comes to deep dive technical details.

I can only say I test drove both, and it felt very different. For some reason, the BYD had a lag (of up to say 1+ sec) before a sudden surge compared to the J7 which was smoother acceleration (but just as fast).

The fact that one is 1.5T vs 1.5NA with 201hp electric motors means there should be some difference.

Edited September 10, 2025 by Ake109

[johntan79]

Any idea what is the price now and how much it is impacted by the new VES measures? 

[Ake109]

On 9/10/2025 at 3:49 PM, johntan79 said:

Any idea what is the price now and how much it is impacted by the new VES measures? 

The new VES is just a 2.5k difference. Nothing significant. The current COE prices are a bigger impact.

[Unltd]

On 9/10/2025 at 4:39 PM, Ake109 said:

The new VES is just a 2.5k difference. Nothing significant. The current COE prices are a bigger impact.

If PHEV is considered Hybrid in LTA’s eyes (which it should because it still has ICE component), then it is not a 2.5k difference. There will be 0 rebates.

[Ake109]

 

On 9/10/2025 at 5:00 PM, Unltd said:

If PHEV is considered Hybrid in LTA’s eyes (which it should because it still has ICE component), then it is not a 2.5k difference. There will be 0 rebates.

What I mean is now got 2.5k rebate, 1 Jan 2026 is zero. so 2.5k diff

[Terence2112]

J7 no impact. The 2.5k rebate is negligible to say the least, because the increase in COE is more than that. 
 

[Terence2112]

On 9/10/2025 at 3:02 PM, Ake109 said:

I am not informed enough to flat out say that the SE is wrong.

But you and I both know how well informed the typical SG car SE is, when it comes to deep dive technical details.

I can only say I test drove both, and it felt very different. For some reason, the BYD had a lag (of up to say 1+ sec) before a sudden surge compared to the J7 which was smoother acceleration (but just as fast).

The fact that one is 1.5T vs 1.5NA with 201hp electric motors means there should be some difference.

Not sure about BYD, but j7 uses the electric motor from 0 to 40km/h first then subsequent petrol kicks in at higher speed. 
 

not sure about the BYD but does it do that? 

[Terence2112]

Anybody snag a J7 at the recent car at expo? Was reported that omoda|Jaecoo was the top 5 selling brands at the expo. 

[Lycanthrope]

Any comments from drivers using 6 to 8 speed torque converters or DSG when testing this J7 ?