| Reference | Merits | Demerits |
| [20] | Bookings are made using a smartphone application. Secure | Expensive, difficult to comprehend |
| [24] | It contains slot information. It is compatible with the existing parking system. | High price. Implementation will take more time. |
| [25] | The system creates its own charging timetable for electric vehicles. | There is no chargeable data creation. |
| [26] | Bookings are made using a smartphone application. GPS use | The issue with data uploading |
| [32] | Automatic data generation using a mobile application | No safety against a variety of environmental factors |
| [28] | Because of the cloud’s flexibility, data may be added or withdrawn. | Overloading the microcontroller might cause the entire system to crash. |
| [29] | usage of a charge management system (CMS) | There is no mobile application. |
| [33] | Wireless charging is more convenient and efficient than using a plug-in. For high-powered applications. | Only in stationary modes is it used. |
| [30] | It provides an effective and adaptable way to charge electric vehicles. | Wireless charging lacks standardization. |
| [31] | Parking spots can be reserved. | There is no usage of GPS. No data to upload |