Sven Mahler
Fuelcons | Real world fuel consumption data and analysis | www.fuelcons.com | Mahler@fuelcons.com
ABSTRACT
The aim of the present study was to compare the average fuel consumption (per tank of fuel) of the gasoline-powered 2009 Volkswagen Polo 1.2 R6 (Polo) with that of the 2012 Toyota Yaris Hybrid (YHSD) under consideration of underlying average temperatures and speeds. Both vehicles were sequentially driven by the same driver on comparable routes and with the intention to save fuel. The latter included the application of hypermiling techniques, especially when driving the Polo. Covered distances were 62,629 km (Polo) and 50,069 km (YHSD). Overall, the average fuel consumption of the YHSD was 19% lower than that of the Polo (4.10 vs. 5.04 L/100 km). Using multiple linear regression analysis, the effect of average temperature on average fuel consumption was found to be comparable for both vehicles (− 0.0408 L/100 km and − 0.0397 L/100 km per increase of one degree Celsius for the Polo and the YHSD, respectively). In contrast, an opposing impact of average speed was observed (− 0.0185 L/100 km [Polo] and + 0.0249 L/100 km [YHSD] for each additional km/h in average speed). The results are discussed in light of type-approval- and real world fuel consumption figures.
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