Most of the time the Mustang was more economical than Chevy. The best mileage, 29.1, was during the drive from Tennessee to North Carolina. Lacking an exact measure of how many miles the Ford actually traveled, the average fuel consumption is estimated to 25 MPG. The full details are shown in the table below.

DATE FUEL (gals) MPG

5/15
5/16
5/16
5/16
5/17
5/17
5/17
5/18
5/18
5/19
5/19
5/19
5/20
5/20
5/21
5/22
5/23
5/24
5/26
5/28
5/28
5/30
5/30
5/31
5/31
6/1
6/1
6/2
6/3
6/3
6/4
6/4
6/4
6/5
6/5
6/5
6/6
Total/average:

9.0
4.5
6.8
8.7
8.5
9.2
7.2*
8.9
9.5
7.8
9.1
8.5
7.4
N/A
8.0**
6.5**
5.9**
11.6
9.6
8.9
6.5**
11.0**
7.6**
5.6
9.8
7.2
9.8
9.8
7.5
10.1
10.2
8.7
10.4
11.7
N/A
9.4
9.2
>300.1

25.0
20.5
27.9
25.6
22.6
24.6
N/A
21.4
22.7
22.9
26.4
25.1
26.4
N/A
N/A
N/A
N/A
N/A
20.9
22.5
N/A
N/A
N/A
N/A
26.1
29.0
27.2
24.5
28.4
26.0
25.1
25.3
25.2
26.9
N/A
25.8
29.1
25.0***

bm

Calculating the Camaro's average fuel consumption proved difficult since the trip counter was busted. The effort was further hampered because some gas stations, especially in the West, either have a pay-in-advance policy or offer full service where you're not allowed to operate the pump yourself. The table below shows the statistics of each day. Bear in mind that the Mustang was used for sightseeing and some days the Camaro wasn't used at all.
It's interesting to see how the average fuel consumption varies from day to day. Old 8-cylinder cars are not very fuel efficient. The best average, 27.3 miles per gallon, occurred on May 20 when we drove on Route 66 on our way to Vegas. The worst result was from LA: 19.2 MPG. Seen as a whole the average is above 20. This has to be compared with the 17 that the Camaro usually did in North Carolina so all in all a rather good fuel economy was achieved during the trip.

DATE ODOMETER FUEL (gals) MPG

5/15
5/16
5/16
5/16
5/17
5/17
5/18
5/18
5/19
5/19
5/19
5/20
5/20
5/21
5/22
5/24
5/26
5/28
5/28
5/30
5/30
5/31
5/31
6/1
6/1
6/2
6/3
6/3
6/4
6/4
6/4
6/5
6/5
6/5
6/6
Totals/average:

16,606
16,828
17,087
17,319
17,503
17,737
18,164
18,387
18,564
18,814
19,034
19,231
19,474
19,680
19,794
19,987
20,128
20,328
20,558
20,635
20,855
21,006
21,272
21,489
21,765
22,008
22,191
22,464
22,722
22,950
23,222
23,526
23,778
24,055
24,321
7,715

9.0
10.7
11.2
10.2
9.5
10.2
?*
10.7
8.2
10.2
9.7
9.3
8.9
6.5**
6.5**
6.5**
10.3
10.4
6.5**
5.6**
8.2**
8.3
10.9
8.1
11.4
9.9
8.9
10.5
11.5
9.7
10.7
12.6
10.1
11.4
11.4
>323.7

-
20.7
23.1
22.7
19.4
22.9
N/A
20.8
21.6
24.5
22.7
21.2
27.3
N/A
N/A
N/A
N/A
19.2
N/A
N/A
N/A
N/A
24.4
26.8
24.2
24.5
20.6
26.0
22.4
23.5
25.4
24.1
25.0
24.3
23.3
<23.8


*) Not a pump-it-yourself-station
**) Payment in advance, gas tank not filled 100%
***) Estimated

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