I built this website as the sole developer in 2016 as a custom CRM for a car repair documentation service for the UK automotive industry. Due to the level of customisation required I used CodeIgniter to provide email, CSV import/export, and content management functionality. It has multiple levels of users including logins for Customers, as well as for several levels of Admins which provides access to different features.
The website enables vehicle sets to be uploaded that are then used within the system. CSV files can be downloaded which can be used with Excel to analyse website data further.