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Fuel log graph
Efficiency log for: Passat TDI Wagon - 1997 VW Passat Wagon TDI
  • Lifetime Fuel Economy: 54 mpg (US), 4.4 L/100 km, 64.8 mpg (Imp)
  • 90-day Fuel Economy: 54.2 mpg (US), 4.3 L/100 km, 65.1 mpg (Imp)
  • 3-tank Fuel Economy: 55.8 mpg (US), 4.2 L/100 km, 67 mpg (Imp)
  • EPA Combined Rating / % over rating: 36 mpg (US) / 50.7% (based on 90-day fuel economy)
  • Total fills: 22
  • Average cost per gal/L: $5.07 per gal (US); $0.00 per L (price data entered for 20 fill/s)
  • Average cost per fill: $51.98
  • Average distance cost: $0.09 per mi. / $0.06 per km
  • Total fuel used: 218.72 gal (US), 827.9 L
  • Total distance traveled: 11802.4 mi. / 18994.1 km
  • Total cost: $1,039.64
  • Total fuel saved vs. EPA: 109.1 gal. (US) / 413 L
  • Total saved: $553.14 (based on avg. cost per gal./L)
  • Average tank distance: 536.5 mi. / 863.4 km
Fill date Distance Fill amount Price Fuel Economy Details
2024-09-16 513 mi
825.59 km
9.458 gal (US)
7.87 gal (Imp)
35.8 L
318.73 kWh
$4.25
($40.2 total for this fill)
54.24 mpg (US)
65.18 mpg (Imp)
4.34 L/100 km
1.84 gal (US)/100 mi
621.31 Wh/mi
This tank includes fuel from last year when I stopped driving in November for ankle surgery. Then drove a few weeks in May then broke down when Injection Pump finally crapped out. Did an ALH Injection Pump swap in August midway through this tank. Runs much better and better mpg.
2023-10-07 642.2 mi
1033.52 km
11.147 gal (US)
9.28 gal (Imp)
42.2 L
375.65 kWh
$5.46
($60.86 total for this fill)
57.61 mpg (US)
69.2 mpg (Imp)
4.08 L/100 km
1.74 gal (US)/100 mi
584.94 Wh/mi
still throwing Quantity Adjuster codes N 01246 codes. Ran a can of diesel purge and most of the erratic idle stopped. Only does it when starting and cold. IQ is set to 6.0. Has bad shudder when cold at part idle.
2023-09-02 629.2 mi
1012.6 km
11.4 gal (US)
9.49 gal (Imp)
43.15 L
384.18 kWh
$5.46
($62.24 total for this fill)
55.19 mpg (US)
66.3 mpg (Imp)
4.26 L/100 km
1.81 gal (US)/100 mi
610.58 Wh/mi
mostly averaging 65 mph in to work about 63 mph back.
still have codes and tuning issues
2023-08-17 606.5 mi
976.07 km
10.847 gal (US)
9.03 gal (Imp)
41.06 L
365.54 kWh
$4.89
($53.04 total for this fill)
55.91 mpg (US)
67.17 mpg (Imp)
4.21 L/100 km
1.79 gal (US)/100 mi
602.7 Wh/mi
Still throwing codes. Limp mode home several times.
Lots of VAG Com diagnostics idling but still throwing the N146 code (IQ out)
Adjusted IQ to 4.8
Replaced MAF, which seemed to help.
Replaced turbo wastegate vacuum hose
MAF replacement seemed to increase gas mileage
Bubbles in fuel line to IP
Finally replaced battery, so odometer not resetting
2023-07-18 549.3 mi
884.01 km
10.1 gal (US)
8.41 gal (Imp)
38.23 L
340.37 kWh
$4.69
($47.37 total for this fill)
54.39 mpg (US)
65.32 mpg (Imp)
4.32 L/100 km
1.84 gal (US)/100 mi
619.64 Wh/mi
dead battery again. I remember when I had at least 485 miles on odometer when odometer reset.
2023-07-08 731 mi
1176.43 km
13.03 gal (US)
10.85 gal (Imp)
49.32 L
439.11 kWh
$4.69
($61.11 total for this fill)
56.1 mpg (US)
67.37 mpg (Imp)
4.19 L/100 km
1.78 gal (US)/100 mi
600.7 Wh/mi
added front and side skirts, closed in front wheel gap.

Was getting some overboosting (boost creep) on the first half of the tank which dropped my gas mileage 5 - 6 mpg based on previous week.
2023-05-17 766.2 mi
1233.08 km
13.32 gal (US)
11.09 gal (Imp)
50.42 L
448.88 kWh
$4.59
($61.14 total for this fill)
57.52 mpg (US)
69.09 mpg (Imp)
4.09 L/100 km
1.74 gal (US)/100 mi
585.85 Wh/mi
Mostly 63 - 65 cruise mph. Nice warm weather finally.
2023-04-25 629.6 mi
1013.24 km
11.82 gal (US)
9.84 gal (Imp)
44.74 L
398.33 kWh
$5.46
($64.54 total for this fill)
53.27 mpg (US)
63.98 mpg (Imp)
4.42 L/100 km
1.88 gal (US)/100 mi
632.67 Wh/mi
about 65 mph commute, much rain commuting on this tank
2023-03-29 652 mi
1049.29 km
12.24 gal (US)
10.19 gal (Imp)
46.33 L
412.49 kWh
$4.59
($56.18 total for this fill)
53.27 mpg (US)
63.98 mpg (Imp)
4.42 L/100 km
1.88 gal (US)/100 mi
632.65 Wh/mi
2023-02-03 656.3 mi
1056.21 km
12.9 gal (US)
10.74 gal (Imp)
48.83 L
434.73 kWh
$4.47
($57.66 total for this fill)
50.88 mpg (US)
61.11 mpg (Imp)
4.62 L/100 km
1.97 gal (US)/100 mi
662.4 Wh/mi
mostly around 65 mph commute
2023-01-23 590.7 mi
950.64 km
10.92 gal (US)
9.09 gal (Imp)
41.34 L
368 kWh
$4.47
($48.81 total for this fill)
54.09 mpg (US)
64.98 mpg (Imp)
4.35 L/100 km
1.85 gal (US)/100 mi
622.99 Wh/mi
Lots of rain on this tank.
2023-01-22 545 mi
877.09 km
10.5 gal (US)
8.74 gal (Imp)
39.75 L
353.85 kWh
$4.69
($49.25 total for this fill)
51.9 mpg (US)
62.36 mpg (Imp)
4.53 L/100 km
1.93 gal (US)/100 mi
649.27 Wh/mi
My weak battery causes my odometer to zero after a three day weekend when it doesn't start on Tuesday. I remember having at least 283 miles on the odometer before it went to zero. Probably had more miles. I went 262 miles after that before I filled up.
2022-12-14 618.8 mi
995.86 km
10.29 gal (US)
8.57 gal (Imp)
38.95 L
346.77 kWh
$4.97
($51.14 total for this fill)
60.14 mpg (US)
72.21 mpg (Imp)
3.91 L/100 km
1.66 gal (US)/100 mi
560.39 Wh/mi
best fill yet. First recorded fill up since grill block.
Didn't fill up at normal station but used most level spot. I did let the pump stop itself 3 times since I was expecting 11.0 gallons or so.
2022-11-01 440.4 mi
708.76 km
8.395 gal (US)
6.99 gal (Imp)
31.78 L
282.91 kWh
$5.19
($43.57 total for this fill)
52.46 mpg (US)
63 mpg (Imp)
4.48 L/100 km
1.91 gal (US)/100 mi
642.39 Wh/mi
colder, windy, rainy weather. New job longer commute. 35 miles each way.
2022-10-20 338.4 mi
544.6 km
6.173 gal (US)
5.14 gal (Imp)
23.37 L
208.03 kWh
$5.48
($33.83 total for this fill)
54.82 mpg (US)
65.84 mpg (Imp)
4.29 L/100 km
1.82 gal (US)/100 mi
614.75 Wh/mi
Commuting, 60 - 63 mph on highway
2022-10-10 273.6 mi
440.32 km
5.101 gal (US)
4.25 gal (Imp)
19.31 L
171.9 kWh
$5.39
($27.49 total for this fill)
53.64 mpg (US)
64.38 mpg (Imp)
4.39 L/100 km
1.86 gal (US)/100 mi
628.29 Wh/mi
Commuting. 61 -63 mph
Lights on in morning
2022-09-29 382 mi
614.77 km
7.317 gal (US)
6.09 gal (Imp)
27.7 L
246.58 kWh
$5.08
($37.17 total for this fill)
52.21 mpg (US)
62.73 mpg (Imp)
4.51 L/100 km
1.92 gal (US)/100 mi
645.5 Wh/mi
Spokane to Bremerton. 71-73 mph cruise.
2022-09-27 334.9 mi
538.97 km
6.57 gal (US)
5.47 gal (Imp)
24.87 L
221.41 kWh
50.97 mpg (US)
61.22 mpg (Imp)
4.61 L/100 km
1.96 gal (US)/100 mi
661.12 Wh/mi
Bremerton to Spokane.
Headwind from Ellensburg to Cheney.
73 mph before headwind. 69 mph after
2022-09-21 382.3 mi
615.25 km
6.99 gal (US)
5.82 gal (Imp)
26.46 L
235.56 kWh
54.69 mpg (US)
65.69 mpg (Imp)
4.3 L/100 km
1.83 gal (US)/100 mi
616.17 Wh/mi
2022-08-21 401 mi
645.35 km
7.03 gal (US)
5.85 gal (Imp)
26.61 L
236.91 kWh
$5.999
($42.17 total for this fill)
57.04 mpg (US)
68.55 mpg (Imp)
4.12 L/100 km
1.75 gal (US)/100 mi
590.8 Wh/mi
2022-06-28 498 mi
801.45 km
9.57 gal (US)
7.97 gal (Imp)
36.23 L
322.51 kWh
$6.299
($60.28 total for this fill)
52.04 mpg (US)
62.48 mpg (Imp)
4.52 L/100 km
1.92 gal (US)/100 mi
647.61 Wh/mi
1/3 normal commute driving 65 mph max,
2/3 super conservative driving, coasting, some p&g, 60 mph max
2022-06-11 622 mi
1001.01 km
13.6 gal (US)
11.32 gal (Imp)
51.48 L
458.32 kWh
$5.999
($81.59 total for this fill)
45.74 mpg (US)
54.95 mpg (Imp)
5.14 L/100 km
2.19 gal (US)/100 mi
736.85 Wh/mi
First fill up with the Scan Gauge II and emphasizing economy.

Best gas mileage ever on a tank was barely 42 mpg

View: spreadsheet friendly fuel log output (for copy/paste)


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