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Fuel log graph
Efficiency log for: A8 luxury fuel sipper - 1997 Audi A8 1.2 TDI 6 speed manual
  • Lifetime Fuel Economy: 46.1 mpg (US), 5.1 L/100 km, 55.4 mpg (Imp)
  • 90-day Fuel Economy: 64.6 mpg (US), 3.6 L/100 km, 77.6 mpg (Imp)
  • 3-tank Fuel Economy: 69.9 mpg (US), 3.4 L/100 km, 84 mpg (Imp)
  • EPA Combined Rating / % over rating: 31 mpg (US) / 108.5% (based on 90-day fuel economy)
  • Total fills: 54
  • Average cost per gal/L: $4.39 per gal (US); $1.16 per L (price data entered for 3 fill/s)
  • Average cost per fill: $29.00
  • Average distance cost: $0.09 per mi. / $0.06 per km
  • Total fuel used: 383.27 gal (US), 1450.8 L
  • Total distance traveled: 17665.4 mi. / 28429.6 km
  • Total cost: $87.00
  • Total fuel saved vs. EPA: 186.6 gal. (US) / 706.4 L
  • Total saved: $819.17 (based on avg. cost per gal./L)
  • Average tank distance: 327.1 mi. / 526.5 km
Fill date Distance Fill amount Price Fuel Economy Details
2016-07-26 529 km
328.71 mi
15 L
3.96 gal (US)
3.3 gal (Imp)
133.45 kWh
2.84 L/100 km
83.01 mpg (US)
99.61 mpg (Imp)
1.2 gal (US)/100 mi
405.98 Wh/mi
15 liter test tank. (only highway)
weather +26,5 celsius and sunny so little bit better than previous tank.
Loosened the rear brakes and bearings. righ rear brake slide pin was totally stuck, that is the reason why the left rear tire had worn 1mm more what I wondered before.
avg speed 92 km/h

During the test took out few parts as in the beginning the car consumed half a liter too much. That was then 80 km driven.
2016-07-24 322.5 km
200.39 mi
10 L
2.64 gal (US)
2.2 gal (Imp)
88.97 kWh
3.1 L/100 km
75.91 mpg (US)
91.09 mpg (Imp)
1.32 gal (US)/100 mi
443.98 Wh/mi
10 liter fuel consumption test tank. Filled again when the needle was at certain point like in previous tanks, but now the mark is lower as in previous tank I drove the tank closer to empty. (still 25 liters left so will try to drive it more empty for next test tank)
avg speed 92 km/h Had to turn 4 times which lower the avg speed.
- on board computer 3.8 l/100km, actual 3,1 so error 18,5%
Weather +25 celsius but cloudy so road temperature did not get so hot.
- Installed front tire splitters
- Took out extra junk from the trunk which made car about 15-20 kg lighter
2016-07-24 654.4 km
406.63 mi
25.65 L
6.78 gal (US)
5.64 gal (Imp)
228.49 kWh
3.92 L/100 km
59.97 mpg (US)
72.1 mpg (Imp)
1.67 gal (US)/100 mi
561.91 Wh/mi
40 km in the city which avg fuel consumption was 8.8l/100km.
Rest highway between 80-100 km/h
On board computer 4.9 l/100km
Tank avg speed 76 km/h
(This was not a fillup (drove tank more empty) So its now 25 kg lighter after this tank.)
2016-07-18 676 km
420.05 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
3.7 L/100 km
63.64 mpg (US)
76.37 mpg (Imp)
1.57 gal (US)/100 mi
529.51 Wh/mi
200 km in heavy rain.
30 km in city
avg speed 82 km/h
obd computer was 4.6 liters so error 20%
2016-07-14 680.1 km
422.59 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
3.68 L/100 km
64.03 mpg (US)
76.83 mpg (Imp)
1.56 gal (US)/100 mi
526.33 Wh/mi
Avg speed 82 km/h
70 percent higway at 100 km/h
130 km in rain
50km in city with many cold starts
Installed more underside panels
Changed injectors at the last half of tank
Made car 30 kg lighter
Blogged small fuel leak drop every 30 seconds
Lots of unecessary accelerations
2016-07-02 737.4 km
458.2 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
3.39 L/100 km
69.42 mpg (US)
83.31 mpg (Imp)
1.44 gal (US)/100 mi
485.42 Wh/mi
Neste green diesel works better.
50% of the tank +100kg
80% tank @ 100 km/h (avg speed 88 km/h
last 60 km of the tank in heavy rain.
avg temp on whole tank about +25 celsius
cars computer was 4.3 l/100km so error 21%
6500 km driven with 155/70R19 bridgestone ecopias:
FR 5.2mm
FL 5.4mm
RR 4.4mm
RL 5.2mm
Once changed postions front to back
2016-06-25 703.1 km
436.89 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
3.56 L/100 km
66.2 mpg (US)
79.43 mpg (Imp)
1.51 gal (US)/100 mi
509.1 Wh/mi
AVG speed of the tank 92 km/h
80%@100 km/h
Cars own gauge showe 4.3 l/100 km, error 18%.
Weather +23 celsius +100kg of extra load
In the end filled tank with Neste green diesel and it started to work better, so will use only it again.
2016-06-12 616.2 km
382.89 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
4.06 L/100 km
58.01 mpg (US)
69.62 mpg (Imp)
1.72 gal (US)/100 mi
580.9 Wh/mi
Run injector cleaner straigth from bottle. Idle fuel consumtpion dropped little.
90% highway at 100 km/h.
Fixed engine mount rubber
Car is not working properly :/.
2016-06-05 593 km
368.47 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
4.22 L/100 km
55.83 mpg (US)
66.99 mpg (Imp)
1.79 gal (US)/100 mi
603.63 Wh/mi
80% highway at 100 km/h of which 10% in heavy rain
13% city driving and testing with 7.8 liters average consumption for 75km
Adjusted wheel angles, still not perfect.
Tire pressures up to 4.0 bar, (was dropped to 3.0 bar)
engine mount fixed
2016-04-25 578.9 km
359.71 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
4.32 L/100 km
54.5 mpg (US)
65.4 mpg (Imp)
1.83 gal (US)/100 mi
618.33 Wh/mi
Tank avg speed 90 km/h
Fuel consumption display 5.2 l/100km, error 20%
83% @100 km/h
weather +4 celsius and 60% in rain.
+100 kg extra load
7 cold starts.
2016-04-21 471.6 km
293.04 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
5.3 L/100 km
44.4 mpg (US)
53.28 mpg (Imp)
2.25 gal (US)/100 mi
759.01 Wh/mi
230 km driving @ 115 km/h, rest city or urban with many cold starts.
2016-04-15 597.5 km
371.27 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
4.18 L/100 km
56.25 mpg (US)
67.5 mpg (Imp)
1.78 gal (US)/100 mi
599.08 Wh/mi
Tank avg speed 76 km/h
80% of the tank 100 km/h
about 12 cold starts.
Summer diesel
installed 25mm spacers
2016-04-10 525.7 km
326.65 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
4.76 L/100 km
49.49 mpg (US)
59.39 mpg (Imp)
2.02 gal (US)/100 mi
680.91 Wh/mi
Spacers front 36 rear 40mm
2016-04-07 449.7 km
279.43 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
5.56 L/100 km
42.34 mpg (US)
50.81 mpg (Imp)
2.36 gal (US)/100 mi
795.98 Wh/mi
Changed engine oils.
Adjusted rear heigth
Installed underside panels to rear
Installed small mirrors
Installed spacers 51mm front and rear
Changed turbo to 1749VA was worn 1749V
2016-03-30 552.3 km
343.18 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
4.53 L/100 km
52 mpg (US)
62.4 mpg (Imp)
1.92 gal (US)/100 mi
648.11 Wh/mi
cars own fuel consumption computer 5.5 liters. 100 km of the tank lot of accelerations.
2016-03-28 562.3 km
349.4 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
4.45 L/100 km
52.94 mpg (US)
63.53 mpg (Imp)
1.89 gal (US)/100 mi
636.58 Wh/mi
avg speed 78 km/h. Installed 155/70R19 Ecopia summer tires. Adjusted rear heigth/rake to 0.7 degrees.
ODO error -4% So have to multiply odo reading 1.04 to get correct distance
2016-03-26 342 km
212.51 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
7.31 L/100 km
32.2 mpg (US)
38.64 mpg (Imp)
3.11 gal (US)/100 mi
1046.63 Wh/mi
Chance for fillup error as I took tank sensor off and put it back on, so the position might have changed.
2016-03-20 486 km
301.99 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
$1.13
($28.25 total for this fill)
5.14 L/100 km
45.76 mpg (US)
54.91 mpg (Imp)
2.19 gal (US)/100 mi
736.51 Wh/mi
cars computer 5.4 liters with 78 km/h avg speed
2016-03-18 466.2 km
289.68 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
5.36 L/100 km
43.89 mpg (US)
52.67 mpg (Imp)
2.28 gal (US)/100 mi
767.81 Wh/mi
2016-03-14 468 km
290.8 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
5.34 L/100 km
44.06 mpg (US)
52.87 mpg (Imp)
2.27 gal (US)/100 mi
764.86 Wh/mi
Summer is coming tanks avg temperature only 0 celsius
2016-03-11 477 km
296.39 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
5.24 L/100 km
44.91 mpg (US)
53.89 mpg (Imp)
2.23 gal (US)/100 mi
750.43 Wh/mi
79 km/h avg speed.
This tank 5.6 liters computer reading.
2016-02-07 405 km
251.66 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
6.17 L/100 km
38.13 mpg (US)
45.76 mpg (Imp)
2.62 gal (US)/100 mi
883.81 Wh/mi
very cold weather -20 celsius
2016-02-04 423 km
262.84 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
5.91 L/100 km
39.82 mpg (US)
47.79 mpg (Imp)
2.51 gal (US)/100 mi
846.22 Wh/mi
car computer 6.2 liters
2016-01-30 441 km
274.02 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
5.67 L/100 km
41.52 mpg (US)
49.82 mpg (Imp)
2.41 gal (US)/100 mi
811.69 Wh/mi
cars computer 6.0 liters
2016-01-24 387 km
240.47 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
6.46 L/100 km
36.43 mpg (US)
43.72 mpg (Imp)
2.74 gal (US)/100 mi
924.94 Wh/mi
Half tank very high speeds.
2016-01-24 486 km
301.99 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
5.14 L/100 km
45.76 mpg (US)
54.91 mpg (Imp)
2.19 gal (US)/100 mi
736.51 Wh/mi
+200 kg weather only -4 celsius, highway 90%
2016-01-23 436.5 km
271.23 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
5.73 L/100 km
41.1 mpg (US)
49.31 mpg (Imp)
2.43 gal (US)/100 mi
820.04 Wh/mi
OBD computer 5.7 liters
2016-01-22 400.5 km
248.86 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
$1.1
($27.5 total for this fill)
6.24 L/100 km
37.71 mpg (US)
45.25 mpg (Imp)
2.65 gal (US)/100 mi
893.76 Wh/mi
obd computer says 6.6 liters adjusted -15% compared to previous tanks.

Very cold -25 and few cold starts
2016-01-16 378 km
234.88 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
6.61 L/100 km
35.59 mpg (US)
42.71 mpg (Imp)
2.81 gal (US)/100 mi
946.95 Wh/mi
-20-30 celsius cold
2016-01-10 413.1 km
256.69 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
6.05 L/100 km
38.89 mpg (US)
46.67 mpg (Imp)
2.57 gal (US)/100 mi
866.49 Wh/mi
-20-30 celsius cold
2016-01-08 369 km
229.29 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
6.78 L/100 km
34.74 mpg (US)
41.69 mpg (Imp)
2.88 gal (US)/100 mi
970.04 Wh/mi
-20-30 celsius cold.
10 cold starts
2016-01-04 427.5 km
265.64 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
5.85 L/100 km
40.25 mpg (US)
48.3 mpg (Imp)
2.48 gal (US)/100 mi
837.3 Wh/mi
cold -10 to -20 celsius
2015-12-22 471.6 km
293.04 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
5.3 L/100 km
44.4 mpg (US)
53.28 mpg (Imp)
2.25 gal (US)/100 mi
759.01 Wh/mi
Cars computer 6.0 liters.

New DQS gearbox with 7% taller 6 th gear and other gears taller also.
2015-12-20 450.9 km
280.18 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
5.54 L/100 km
42.45 mpg (US)
50.94 mpg (Imp)
2.36 gal (US)/100 mi
793.85 Wh/mi
avg speed 78 km/h
cars computer 6.4 l/100km
2015-12-10 405 km
251.66 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
6.17 L/100 km
38.13 mpg (US)
45.76 mpg (Imp)
2.62 gal (US)/100 mi
883.81 Wh/mi
cars fuel computer 6.8 liters
2015-11-18 400.5 km
248.86 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
6.24 L/100 km
37.71 mpg (US)
45.25 mpg (Imp)
2.65 gal (US)/100 mi
893.76 Wh/mi
2015-10-19 2277 km
1414.86 mi
151 L
39.89 gal (US)
33.22 gal (Imp)
1344.29 kWh
6.63 L/100 km
35.47 mpg (US)
42.59 mpg (Imp)
2.82 gal (US)/100 mi
950.12 Wh/mi
Long trip to lapland with very high speeds. Installed 205/55R16 winter tires.
2015-10-05 547 km
339.89 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
4.57 L/100 km
51.5 mpg (US)
61.8 mpg (Imp)
1.94 gal (US)/100 mi
654.39 Wh/mi
90 percent highway, installed grill block to lower bumber holes
2015-10-02 489 km
303.85 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
5.11 L/100 km
46.04 mpg (US)
55.25 mpg (Imp)
2.17 gal (US)/100 mi
732.01 Wh/mi
65 percent highway tank. Had a 6-8mm toe out at rear tires. Lost 5mm thread depth at 7000 km distance.
2015-09-27 595 km
369.72 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
4.2 L/100 km
56.02 mpg (US)
67.22 mpg (Imp)
1.79 gal (US)/100 mi
601.59 Wh/mi
90% of the tank at about 100 km/h speeds+150kg compared to normal tanks. 60 km of city driving.

Changed engine oils mobil 1 esp 5W-30
2015-09-24 450 km
279.62 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
5.56 L/100 km
42.37 mpg (US)
50.84 mpg (Imp)
2.36 gal (US)/100 mi
795.44 Wh/mi
2015-09-14 440 km
273.4 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
5.68 L/100 km
41.42 mpg (US)
49.71 mpg (Imp)
2.41 gal (US)/100 mi
813.53 Wh/mi
2015-09-10 515 km
320.01 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
4.85 L/100 km
48.49 mpg (US)
58.18 mpg (Imp)
2.06 gal (US)/100 mi
695.04 Wh/mi
Mostly highway.
2015-09-06 502 km
311.93 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
4.98 L/100 km
47.26 mpg (US)
56.71 mpg (Imp)
2.12 gal (US)/100 mi
713.04 Wh/mi
onboard coputer 6.6 l/100 km. Tanks avg speed 100 km/h but not all were highway driving so there were some high speed sections as well to reach that avg speed
2015-09-06 470 km
292.04 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
5.32 L/100 km
44.25 mpg (US)
53.1 mpg (Imp)
2.26 gal (US)/100 mi
761.61 Wh/mi
onboard computer 6.8 l/100km
2015-09-04 420 km
260.98 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
5.95 L/100 km
39.54 mpg (US)
47.45 mpg (Imp)
2.53 gal (US)/100 mi
852.25 Wh/mi
onboard computer 7.2 l/100km. Installed smooth TuneCover hubcaps. Very fast driving so there is some improvement to previous worse tank .
2015-08-30 452 km
280.86 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
5.53 L/100 km
42.55 mpg (US)
51.07 mpg (Imp)
2.35 gal (US)/100 mi
791.92 Wh/mi
Some high speed driving and small country gravel roads. Cars fuel consumption display reading 7.1 liters so error 22.2%
2015-08-19 543 km
337.4 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
4.6 L/100 km
51.12 mpg (US)
61.35 mpg (Imp)
1.96 gal (US)/100 mi
659.22 Wh/mi
Cars onboard fuel consumption gauge was 6.0 l/100km. 450 km of fuel efficient driving so error 23.4%
2015-08-16 399 km
247.93 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
6.27 L/100 km
37.57 mpg (US)
45.08 mpg (Imp)
2.66 gal (US)/100 mi
897.11 Wh/mi
High speed driving (100MPH) on highway. Top speed is over 200 km/h.
2015-08-16 460 km
285.83 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
5.43 L/100 km
43.31 mpg (US)
51.97 mpg (Imp)
2.31 gal (US)/100 mi
778.15 Wh/mi
High speed driving. Installed smooth underside panels and adjusted ecu file
2015-08-09 637 km
395.81 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
$1.25
($31.25 total for this fill)
3.92 L/100 km
59.97 mpg (US)
71.97 mpg (Imp)
1.67 gal (US)/100 mi
561.94 Wh/mi
This tank was
80% at 100 km/h speed
15% at 90 km/h
and 5% in the city
cars onboard computers avg speed was 88km/h.
Installed grill block to front
2015-08-09 415.1 km
257.93 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
6.02 L/100 km
39.08 mpg (US)
46.9 mpg (Imp)
2.56 gal (US)/100 mi
862.33 Wh/mi
High speed driving at 150-160 km/h speeds for 250 km. acceleration tests
2015-08-05 590 km
366.61 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
4.24 L/100 km
55.55 mpg (US)
66.66 mpg (Imp)
1.8 gal (US)/100 mi
606.69 Wh/mi
Had 50 km of traffic light driving in the beginning of the tank. Cam timing is now adjusted from -2.2 degrees to 0 degrees. That seemend to help quite much specially to low end torque.

Rest of the tank tried to drive 100 km/h avg speed as much as possible.

AVG temperature +22 celsius.

Lot of black smoke is coming on bigger uphills so the ecu tuning is still way off before its fixed to this turbo and car. One driver opened his window on highway and warned that is my engine OK due to that smoke.
2015-08-04 445 km
276.51 mi
25 L
6.6 gal (US)
5.5 gal (Imp)
222.42 kWh
5.62 L/100 km
41.9 mpg (US)
50.27 mpg (Imp)
2.39 gal (US)/100 mi
804.38 Wh/mi
Cam timing was 2.2 degrees off in this first tank. and 100 km of this high speed driving 125 km/h and 100km of 145 km/h. And lots of un necessary accelerations braking to show friends how this car goes.

Fuel consumption is measured that I fill 25 liters and wait when the fuel needle is at the same point and then refill.

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


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