Skip to main content

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

Factors

Importance (relative importance (%))

Model 1

Model 2

Model 3

Driver

16.1 (33.7)

–

8.3 (9.2)

Average positive acceleration

19.6 (41.0)

–

5.0 (5.5)

Power consumption

12.1 (25.3)

–

8.6 (9.5)

1/duration

–

5.5 (6.7)

4.8 (5.3)

1/distance

–

10.0 (12.2)

9.1 (10.1)

Road grade

–

13.1 (15.9)

12.1 (13.4)

Ambient temperature

–

0.9 (1.1)

0.4 (0.4)

Engine temperature

–

5.9 (7.2)

3.6 (4.0)

Stop

–

8.6 (10.5)

7.9 (8.7)

1/cruise

–

11.9 (14.5)

8.8 (9.7)

1/vehicle speed

–

17.8 (21.6)

15.0 (16.6)

Engine speed

–

8.5 (10.3)

6.8 (7.5)

Total \(\varvec{R}^{2}\)

47.8 (100)

82.2 (100)

90.4 (100)