Chapter 4. Data

This chapter provides an overview of the different datasets used in the analysis.


This chapter lists and briefly summarises the datasets that were available for the analysis. The model is flexible to incorporate data sources at different levels of granularity.

The full Slovenian vehicle registration dataset is available from the Ministry of Public Administration of the Republic of Slovenia on the OPSI web portal (Ministry of Public Administration of Slovenia, 2017[1]). The present analysis uses the 2017 version of the data, which gives an overview of the entire Slovenian vehicle stock for that year. The data provides detailed information on different vehicle characteristics, such as vehicle category and age, technology, size, fuel-efficiency and EURO class. All 1.2 million passenger cars registered in Slovenia in 2017 are represented.

The vehicle registry shows that in 2017, 52% of passenger cars run on gasoline, while 48% run on diesel. Alternative fuel vehicles were only marginally present (0.2%). In terms of age, 22% of all registered passenger cars were younger than five years and 22% older than 15 years. In 2017, 33 585 trucks heavier than 3.5 tonnes were registered in Slovenia. More than 99% of these trucks were diesel fuelled.

The Statistical Office of the Republic of Slovenia (SURS), provided statistics on driving patterns in Slovenia, comprising the number of vehicle-kilometres driven per vehicle and fuel type, by location and by the country of registration (Statistical Office of Slovenia, 2018[2]).

The Jozef Stefan Institute provided estimates from Slovenia’s national energy model in the transport sector up to the year 2035.

Anonymised data on tax revenues collected at vehicle registration in 2017 were obtained from the Financial Administration Office of the Republic of Slovenia (Financial Administration Office of Slovenia, 2017[3]). The dataset indicates – per vehicle registered in 2017 – the size of the tax base (i.e., sales price), the tax rate as well as the amount of the tax payable. Available vehicle characteristics included vehicle and fuel type, CO2 emissions and EURO class as well as engine power.

Finally, the Ministry of Finance of the Republic of Slovenia provided information on energy purchases in Slovenia and the associated excise and carbon tax revenues based on information from the Financial Administration of the Republic of Slovenia (Ministry of Finance of Slovenia, 2018[4]). In 2016, an amount of 0.6 billion litres of gasoline and 1.6 billion litres of diesel used in road transport were taxed. In 2016, truck drivers claimed tax refunds for commercial diesel on 32% of all diesel purchases. The main part of these refunds reached Slovenian nationals (74%), with Romania, Hungary and Slovakia being the largest foreign beneficiary countries.


[3] Financial Administration Office of Slovenia (2017), Motor Vehicle Tax Revenue 2017 (database).

[4] Ministry of Finance of Slovenia (2018), Revenues from excise duties and carbon tax 2008-2017 (database).

[1] Ministry of Public Administration of Slovenia (2017), Vehicle registration records 2017 (database),

[2] Statistical Office of Slovenia (2018), Vehicle-kilometres Slovenia 2015-2016 – provisional data,

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