What does the 'e' in car model 1.5e mean?

[VanMalachi]

The 'e' in car model 1.5e indicates that this is a mid-range configuration vehicle. If the letter 'g' is used after the number, it means the car is a high-end configuration model, while models without any letters denote standard configuration. The relevant introduction to vehicle configurations is as follows: 1. Standard configuration: Includes basic electric controls such as power windows, power steering, air conditioning, etc. 2. Mid-range configuration: Slightly more advanced than standard, including all standard features plus additional configurations like airbags, sunroof, leather seats, power seats, seat heating, etc. 3. High-end configuration: Higher than the above configurations, usually priced about 1/3 more than the basic model. This can be considered the flagship version of the model, often distinguishable by exterior features like alloy wheels, tires, emblems, etc., and includes additional electronic controls such as shock absorbers, navigation system, trip computer, panoramic sunroof, EPS, etc.