BYD Song L

BYD Song L: Which Version Should You Buy?

The BYD Song L choice comes down to three electric versions within the same generation and body style. The AT 72 kWt is the lightest and least powerful option, producing 204 hp and 310 Nm. The AT 87 kWt raises output to 313 hp and 360 Nm while cutting the 0–100 km/h time from 8.6 to 6.9 seconds. The AT 87 kWt 4WD is the performance choice, with 517 hp, 670 Nm and a 4.3-second 0–100 km/h time.

The BYD Song L choice comes down to three electric versions within the same generation and body style. The AT 72 kWt is the lightest and least powerful option, producing 204 hp and 310 Nm. The AT 87 kWt raises output to 313 hp and 360 Nm while cutting the 0–100 km/h time from 8.6 to 6.9 seconds. The AT 87 kWt 4WD is the performance choice, with 517 hp, 670 Nm and a 4.3-second 0–100 km/h time. Price data is not provided, so the comparison cannot determine whether the more powerful versions justify a particular monetary premium.

BYD Song L generations and version choice

The BYD Song L has one generation in the supplied catalogue data. The 1 generation has been in production since June 2023, with no end date recorded. It uses an SUV 5-doors body and contains three versions: AT 72 kWt, AT 87 kWt and AT 87 kWt 4WD.

Because all three versions belong to the same generation, there is no earlier or later generation to compare. The data also identifies no separate restyling. Choosing a Song L therefore means comparing power, torque, acceleration and weight rather than deciding between generations or body types.

BYD Song L EV engine and specs

All three Song L versions are listed as Electro models with an Automatic gearbox and 1 gear. The database labels the drive type as RWD for every version, including AT 87 kWt 4WD; the exact database values are retained below. Engine displacement, cylinder count, cylinder layout and boost are not measured, so displacement-based comparisons such as power per litre cannot be calculated.

Moving from AT 72 kWt to AT 87 kWt adds 109 hp and 50 Nm. Moving from AT 87 kWt to AT 87 kWt 4WD adds 204 hp and 310 Nm. Across the complete range, AT 87 kWt 4WD provides 313 hp and 360 Nm more than AT 72 kWt.

The AT 87 kWt is therefore the meaningful middle step: it has about 53% more horsepower than AT 72 kWt, but only about 16% more torque. The AT 87 kWt 4WD is a much larger performance upgrade, delivering about 65% more horsepower and about 86% more torque than AT 87 kWt.

BYD Song L performance, top speed and economy

AT 87 kWt reaches 100 km/h 1.7 seconds sooner than AT 72 kWt, while its top speed is 2 km/h higher. AT 87 kWt 4WD takes another 2.6 seconds off the acceleration time compared with AT 87 kWt, although both have the same 201 km/h top speed.

Compared directly with AT 72 kWt, AT 87 kWt 4WD is 4.3 seconds quicker to 100 km/h—exactly half the acceleration time in the supplied measurements. Its top-speed advantage is still only 2 km/h. This shows that the additional output primarily buys stronger acceleration, not a materially higher maximum speed.

City, highway and combined consumption are not measured for any version. Consequently, no version can be recommended on the basis of energy economy or mpg. Battery capacity, charging figures and driving range are also not measured in the supplied data.

BYD Song L dimensions and weight

Exterior dimensions, including length, are not measured for any of the three versions. Ground clearance, tank capacity and wheel sizes are also not measured. The available comparison is limited to kerb and gross weight.

AT 87 kWt weighs 107 kg more than AT 72 kWt in both kerb and gross terms. AT 87 kWt 4WD adds another 120 kg over AT 87 kWt. From the lightest to the heaviest version, the difference is 227 kg.

Each version has a 375 kg difference between gross and kerb weight. Based strictly on these two supplied figures, the margin is identical across the range.

Weight per horsepower makes the performance hierarchy especially clear. AT 72 kWt carries approximately 10.58 kg for every horsepower, AT 87 kWt approximately 7.24 kg per horsepower, and AT 87 kWt 4WD approximately 4.61 kg per horsepower. Despite being the heaviest, AT 87 kWt 4WD has the most favorable weight-to-power relationship.

Suspension and brakes

All versions have an Independent, spring front suspension and a Semi-independent, spring rear suspension. Each uses Ventilated disc front brakes and Disc rear brakes. These specifications do not provide a reason to select one version over another because they are the same throughout the supplied range.

Which BYD Song L version should you buy?

Choose AT 72 kWt if lower kerb weight matters more than maximum performance. At 2,158 kg, it is 107 kg lighter than AT 87 kWt and 227 kg lighter than AT 87 kWt 4WD. Its 204 hp, 310 Nm and 8.6-second 0–100 km/h result place it clearly at the entry point of the performance range.

Choose AT 87 kWt for the most moderate upgrade. It adds 109 hp and 50 Nm over AT 72 kWt while adding 107 kg. Acceleration improves by 1.7 seconds, from 8.6 to 6.9 seconds, and top speed rises from 199 to 201 km/h. Its approximate 7.24 kg-per-horsepower figure also represents a substantial improvement over the AT 72 kWt figure of approximately 10.58 kg per horsepower.

Choose AT 87 kWt 4WD if acceleration is the priority. It delivers 517 hp and 670 Nm, reaches 100 km/h in 4.3 seconds and has the strongest weight-to-power result at approximately 4.61 kg per horsepower. Compared with AT 87 kWt, it adds 204 hp and 310 Nm for 120 kg of extra kerb weight. Its top speed remains 201 km/h, however, so the upgrade is about acceleration and torque rather than maximum speed.

There is no evidence here for choosing by price, range, charging performance, consumption, dimensions or ground clearance because those figures are not measured. On the available numbers alone, AT 72 kWt is the lightest choice, AT 87 kWt is the middle ground, and AT 87 kWt 4WD is the clear performance choice.