7大品牌按动力性能分为三个档次：

依维柯Stralis Hi-way、雷诺Magnum、达夫XF为最低档，发动机顶配分别为560、520与510马力，牵引载重在27吨左右的双节车时，自启动至定速巡航至140kph需要的时间最长，一脚刹车下去，从140跌回80再想开到140kph加速起来就比较屎，而且爬坡性能不佳，掉速很明显。

曼恩（雄狮）TGX Euro 6与奔驰New Actros为中档，发动机顶配分别为640与630马力，牵引性能相对上一档次有明显提升，提速相对较快不少。

沃尔沃与斯堪尼亚（不区分子型号）为最高档，V8发动机顶配分别为750与730马力，配合12+2挡带缓速器的变速箱，能较长时间坚持在140。加速性能最棒，爬坡存速性能最好。而沃尔沃白板车已经有400+马力的发动机，相信各位心中有数。另外就是要注意开到140巡航跟80巡航的油耗基本天差地别，这也是下文提到全部4x2的原因。

English The 7 major brands are divided into three grades according to their power performance:

Iveco Stralis Hi-way, Renault Magnum, and Duff XF are the lowest gears. The top engines are 560, 520, and 510 horsepower, respectively. When a tandem vehicle with a towing load of about 27 tons is used, it needs to cruise from constant speed to 140kph. The longest time, one foot brake down, fell from 140 back to 80 and then want to drive to 140kph acceleration is relatively feces, and the climbing performance is poor, the speed is very obvious.

The Mann (Lion) TGX Euro 6 and Mercedes-Benz New Actros are mid-range. The top engine of the engine is 640 and 630 horsepower respectively. The traction performance is significantly improved compared to the previous grade, and the speed increase is relatively fast.

Volvo and Scania are the highest-end models. The V8 engine is equipped with 750 and 730 horsepower, respectively, and it can stay at 140 for a long time with a 12 + 2 retarder transmission. The acceleration performance is the best, and the climbing performance is the best. The Volvo whiteboard already has a 400+ horsepower engine, I believe everyone knows. In addition, it is important to note that the fuel consumption of the 140 cruise and the 80 cruise is basically different, which is the reason for all the 4x2 mentioned below.