The core activity of CarFolTec GmbH encompasses three main areas: 1. **Vehicle Maintenance and Repairs**: The company offers services for the maintenance and repair of vehicles, including diagnosis, service work, air conditioning service, and MFK provision. 2. **Vehicle Optimization**: CarFolTec provides chip tuning to increase vehicle performance by up to 25% and reduce consumption by up to 1 liter per 100 km. 3. **Vehicle Trade**: The company trades in vehicles of all brands and also offers classic cars.