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Table 4 Results of the multi-linear regression models that quantify contribution of: (1) driver factors; (2) environmental and traffic factors; and (3) all factors together on FC gap variance

From: Understanding the origins and variability of the fuel consumption gap: lessons learned from laboratory tests and a real-driving campaign

FactorsImportance (relative importance (%))
Model 1Model 2Model 3
Driver16.1 (33.7)8.3 (9.2)
Average positive acceleration19.6 (41.0)5.0 (5.5)
Power consumption12.1 (25.3)8.6 (9.5)
1/duration5.5 (6.7)4.8 (5.3)
1/distance10.0 (12.2)9.1 (10.1)
Road grade13.1 (15.9)12.1 (13.4)
Ambient temperature0.9 (1.1)0.4 (0.4)
Engine temperature5.9 (7.2)3.6 (4.0)
Stop8.6 (10.5)7.9 (8.7)
1/cruise11.9 (14.5)8.8 (9.7)
1/vehicle speed17.8 (21.6)15.0 (16.6)
Engine speed8.5 (10.3)6.8 (7.5)
Total \(\varvec{R}^{2}\)47.8 (100)82.2 (100)90.4 (100)