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From laboratory to road: Modeling the divergence between official and real-world fuel consumption and CO2 emission values in the German passenger car market for the years 2001–2014

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  • Tietge, Uwe
  • Mock, Peter
  • Franco, Vicente
  • Zacharof, Nikiforos

Abstract

Official fuel consumption and carbon dioxide (CO2) emission values of European passenger cars are widely recognized to be unrepresentative of real-world driving. The divergence between official and real-world values undermines national vehicle taxation schemes and EU-wide CO2 standards for passenger cars, particularly since the divergence increases with new model generations. This study examines real-world fuel consumption data from more than 130,000 vehicles to investigate the development of the divergence. The analysis validates and refines a regression model developed by Ntziachristos et al. (2014), which estimates real-world fuel consumption of cars based on readily available vehicle characteristics, namely official fuel consumption values, vehicle mass, and engine capacity. The regression model yielded coefficients of determination of 0.87 or higher, but was found to underestimate fuel consumption of newer vehicles and company cars. This study proposes to add vehicle build year as a regressor to account for the increasing divergence between official and real-world fuel consumption figures.

Suggested Citation

  • Tietge, Uwe & Mock, Peter & Franco, Vicente & Zacharof, Nikiforos, 2017. "From laboratory to road: Modeling the divergence between official and real-world fuel consumption and CO2 emission values in the German passenger car market for the years 2001–2014," Energy Policy, Elsevier, vol. 103(C), pages 212-222.
    • Handle: RePEc:eee:enepol:v:103:y:2017:i:c:p:212-222
    DOI: 10.1016/j.enpol.2017.01.021
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    1. Ntziachristos, L. & Mellios, G. & Tsokolis, D. & Keller, M. & Hausberger, S. & Ligterink, N.E. & Dilara, P., 2014. "In-use vs. type-approval fuel consumption of current passenger cars in Europe," Energy Policy, Elsevier, vol. 67(C), pages 403-411.
    2. Zeileis, Achim, 2004. "Econometric Computing with HC and HAC Covariance Matrix Estimators," Journal of Statistical Software, Foundation for Open Access Statistics, vol. 11(i10).
    3. Pavlovic, Jelica & Marotta, Alessandro & Ciuffo, Biagio, 2016. "CO2 emissions and energy demands of vehicles tested under the NEDC and the new WLTP type approval test procedures," Applied Energy, Elsevier, vol. 177(C), pages 661-670.
    4. Tsokolis, D. & Tsiakmakis, S. & Dimaratos, A. & Fontaras, G. & Pistikopoulos, P. & Ciuffo, B. & Samaras, Z., 2016. "Fuel consumption and CO2 emissions of passenger cars over the New Worldwide Harmonized Test Protocol," Applied Energy, Elsevier, vol. 179(C), pages 1152-1165.
    5. Diekmann, Laura-Christin & Gerhards, Eva & Klinski, Stefan & Meyer, Bettina & Schmidt, Sebastian & Thöne, Michael, 2011. "Steuerliche Behandlung von Firmenwagen in Deutschland [Company car taxation in Germany]," FiFo Reports - FiFo-Berichte 13, University of Cologne, FiFo Institute for Public Economics.
    6. Zacharof, Nikiforos & Tietge, Uwe & Franco, Vicente & Mock, Peter, 2016. "Type approval and real-world CO2 and NOx emissions from EU light commercial vehicles," Energy Policy, Elsevier, vol. 97(C), pages 540-548.
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