
Some services we provide for individual users and businesses (vehicle rentals up to 24 months):
- Short-term vehicle rentals up to 30 days
- Monthly vehicle rental for longer period (up to 24 months)
- Wedding car hire
- International Student car rental
- Port Koper car rental package
ATET d.o.o. is a Slovenian company specializing in vehicle rental and mobility solutions, established in 1996 with a clear vision of providing high-quality, reliable, and competitively priced mobility services for both private and business customers. From a local car rental provider, ATET has evolved over nearly three decades into one of Slovenia’s most recognized mobility companies and a trusted partner for numerous domestic and international organizations.
Over the years we have expanded beyond Slovenia and developed strong partnerships with international car rental brokers and travel partners, making our services easily accessible to international visitors and business customers seeking reliable mobility solutions across the region.
Gradually, we have also built our network of Offices in Slovenia an Croatia.

A key milestone in the company’s development came in 2019, when ATET became part of the Petrol Group. Being part of one of the largest energy groups in the region enables us to develop innovative services where mobility is seamlessly connected with energy and digital solutions. Today we offer much more than vehicles; we provide a comprehensive range of mobility services, including short-term and long-term vehicle rental, fleet management, replacement vehicles, fleet analytics and optimization as well as vehicle sales.
ATET Mobility Services
Our business is built on flexibility, a personal approach and the continuous search for optimal solutions tailored to each customer. With decades of experience and a modern vehicle fleet, ATET delivers flexible mobility solutions for everyday transportation, corporate mobility, tourism programs, and efficient fleet management.
One of ATET’s key strengths is its ability to integrate mobility with Petrol’s energy services, enabling companies and individuals to benefit from more efficient, cost-optimized, and sustainable vehicle use.
- 24/7 customer support
- Modern and regularly renewed vehicle fleet
- Flexible mobility solutions
- Excellent customer experience
- Reliable local expertise
- Nationwide coverage
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Services for Private Customers
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Services for Business Customers
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Fleet Management & Business Mobility Solutions
For business customers, ATET develops tailor-made fleet management solutions designed to optimize mobility costs and simplify day-to-day operations. Our services include:
- Fleet analysis and optimization
- Assessment of actual mobility and rental requirements
- Cost-efficient fleet planning
- Total Cost of Ownership (TCO) comparisons
- Vehicle maintenance support
- Service and tire change coordination
- Replacement vehicle solutions
- Claims and damage management support
ATET also takes care of the operational and logistical aspects of fleet management, including vehicle transportation to servicing facilities, technical inspections, tire replacement appointments, replacement vehicle organization and vehicle handover management. The goal is to reduce administrative workloads while ensuring uninterrupted mobility for employees.
“At ATET we believe that the future of mobility is not just about vehicles, but about comprehensive solutions that connect mobility, energy, and customer experience. Our goal is to develop sustainable mobility for the future: flexible, accessible and closely integrated with energy solutions. As part of the Petrol Group, we can combine expertise, infrastructure, and innovation to create services that enable both companies and individuals to enjoy more efficient, sustainable, and worry-free mobility.”
Tomaž Novak, Managing Director, ATET d.o.o.
ATET part of Rent a Car Slovenia Assoscitation
ATET is also actively involved in the development of the Slovenian vehicle rental industry and is a member of the Slovenian Rent a Car Association, which brings together leading vehicle rental providers to address key industry topics and support the development of high-quality mobility services.
At ATET, we believe that even a vehicle rental service can become an exceptional customer experience. This is why we strive to listen to every customer, understand their needs, and provide complete mobility solutions tailored to their requirements.