1 liter petrol is ~0.72kg, 45l vs 60l the weight difference is just 10.8kg, is really negligible compare to the kerb weight of jaecoo j7 phev of almost 1.8 tonne vs corolla cross hybrid of 1.4 tonne.

kerb weight difference already 400kg, and j7 phev is slightly bigger compare to corolla.

but j7 has around 18kw battery which is good for around 80km pure electric distance, u can drive it as ev if u want

also much better pick up 347ps/525nm (8.5s) than corolla cross 122ps (12.9s) (not mentioning torque) which is focusing on fuel saving.

also phev ma, can have V2L function.

and next year, china required all petrol/hybrid to have 2.57l/100 km efficiency. the only way to do it is with a much bigger battery pack. lets see how the japs cars gonna achieve this.

我们也找到了工信部公布的原文件进行阅读，重点会在以下的几个数据。
1.整备质量小于1090kg的车型，百公里油耗需要控制在2.57L以内；
2.整备质量在1090kg-2510kg之间的车型，百公里油耗需要控制在3.3L以内；
3.整备质量大于2510kg的车型，百公里油耗需要控制在4.7L以内。