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Fuel log graph
Efficiency log for: The DX v2.0 - 1991 Honda CRX DX
  • Lifetime Fuel Economy: 34.6 mpg (US), 6.8 L/100 km, 41.6 mpg (Imp)
  • 90-day Fuel Economy: no fills in past 90 days
  • 3-tank Fuel Economy: 35.1 mpg (US), 6.7 L/100 km, 42.2 mpg (Imp)
  • EPA Combined Rating / % over rating: 29 mpg (US) / 0% (based on 90-day fuel economy)
  • Total fills: 9
  • Average cost per gal/L: $3.55 per gal (US); $0.00 per L (price data entered for 9 fill/s)
  • Average cost per fill: $29.59
  • Average distance cost: $0.10 per mi. / $0.06 per km
  • Total fuel used: 74.96 gal (US), 283.8 L
  • Total distance traveled: 2596 mi. / 4177.9 km
  • Total cost: $266.33
  • Total fuel saved vs. EPA: 14.6 gal. (US) / 55.3 L
  • Total saved: $51.83 (based on avg. cost per gal./L)
  • Average tank distance: 288.4 mi. / 464.2 km
Fill date Distance Fill amount Price Fuel Economy Details
2012-04-07 342 mi
550.4 km
9.162 gal (US)
7.63 gal (Imp)
34.68 L
308.76 kWh
($34.17 total for this fill)
37.33 mpg (US)
44.82 mpg (Imp)
6.3 L/100 km
2.68 gal (US)/100 mi
902.81 Wh/mi
-89 octane used
-At 074/342 mi:
--New OEM Honda d16z6 thermostat & new coolant
--Replaced wheels with RPF1s. F=R=29 psi
2012-03-28 311 mi
500.51 km
8.739 gal (US)
7.28 gal (Imp)
33.08 L
294.5 kWh
($32.5 total for this fill)
35.59 mpg (US)
42.72 mpg (Imp)
6.61 L/100 km
2.81 gal (US)/100 mi
946.95 Wh/mi
-89 octane used.
-First fill after taken out of storage (stored with a full tank of gas + fuel stabilizer)
2011-11-17 256 mi
411.99 km
7.989 gal (US)
6.65 gal (Imp)
30.24 L
269.23 kWh
($25 total for this fill)
32.04 mpg (US)
38.5 mpg (Imp)
7.34 L/100 km
3.12 gal (US)/100 mi
1051.68 Wh/mi
-89 octane used
-82/256mi: Oil change & Filter. Mobil 1 Syn. 5w30, OEM Honda filter.
-190/256 mi:
--Change wheels to 14" BMW "bottle cap" wheels. Tire press: F=R=32 psi.
--Fixed slight leak in heater core coolant hose in engine bay (via new hose clamp). Added 10oz radiator stop leak to cooling system. Some excessive idling.
-Put into storage for winter after this fill up.
-Concerned that the D16z6 may be burning oil. Uncertain at this point, but some oil consumption may be present.
2011-10-26 309 mi
497.29 km
8.442 gal (US)
7.03 gal (Imp)
31.96 L
284.5 kWh
($28.36 total for this fill)
36.6 mpg (US)
43.95 mpg (Imp)
6.43 L/100 km
2.73 gal (US)/100 mi
920.71 Wh/mi
-89 octane used
-0/309 mi
--Installed my Si's fuel gauge sender
--"adjusted" gas tank & tank straps
-Temperature getting colder. Mostly 40-55*F with very few 60*F days.
-City/hwy mixed, pretty even.
2011-10-10 332 mi
534.3 km
8.89 gal (US)
7.4 gal (Imp)
33.65 L
299.59 kWh
($30.75 total for this fill)
37.35 mpg (US)
44.86 mpg (Imp)
6.3 L/100 km
2.68 gal (US)/100 mi
902.38 Wh/mi
-89 octane used
-At 0/332 mi; fixed high idle issue. Made block-off plate for FITV. Also replaced EACV.
-37/332 mi; reinstall oil catch can between PCV system (w/o filter).
-RPF1 wheels installed (27 lbs per wheel w/tire). Tire pressure: F=28 psi, R=31 psi
2011-10-03 215 mi
346.01 km
7.773 gal (US)
6.47 gal (Imp)
29.42 L
261.95 kWh
($25.64 total for this fill)
27.66 mpg (US)
33.23 mpg (Imp)
8.5 L/100 km
3.62 gal (US)/100 mi
1218.37 Wh/mi
-91 octane used
-At 11/215 mi:
--Replaced fuel filter with a new Honda one
--Replaced air filter with K&N drop in one
--Replaced all 4 FITV seals
--Replaced throttle body gasket (Honda brand)
--Removed oil catch can to trouble shoot high idle issue
--Tire pressure: F=30 psi, R=32.5 psi
-Lots of excessive idling spent trouble shooting high idle issue.
-High idle still present. Discovered FITV is leaking when car warmed up. Replaced all 4 fitv seals and throttle body seals and high idle still present. High idle is probable cause for poor mileage. I did floor it a few times, but I should still be at the 32-ish range (based on my B18C crx).
2011-09-16 270 mi
434.52 km
7.934 gal (US)
6.61 gal (Imp)
30.03 L
267.38 kWh
($29.35 total for this fill)
34.03 mpg (US)
40.85 mpg (Imp)
6.91 L/100 km
2.94 gal (US)/100 mi
990.3 Wh/mi
-91 octane used
-At 47/270mi:
--Spark plugs replaced with OEM Honda/NGK ones
--1/2 can seafoam (8oz) in gas tank
--1/2 can seafoam (8oz) in intake manifold
Seafoaming the intake manifold seamed to create some type of slightly high idle issue, or expose a vacuum leak. When coasting on highway and push clutch rpms only dropped to 1250rpms. WHen come to a stop rpms drop to about 900-1000rpm.
2011-09-13 293 mi
471.54 km
7.452 gal (US)
6.21 gal (Imp)
28.21 L
251.13 kWh
($28.31 total for this fill)
39.32 mpg (US)
47.18 mpg (Imp)
5.98 L/100 km
2.54 gal (US)/100 mi
857.1 Wh/mi
-91 octane used
-70/30 hwy/city, or maybe even 60/40 hwy/city.
-All 4 wheels out of alignment for 207/293 miles (4-wheel alignment done. Front toe still seems a little off. Going to have this double checked)
-At 207/293 mi, front radius rod bushings replaced with polyurethane units, rear spring rate increased from 250 lb/in to 350 lb/in, front sway bar changed back from 17.3mm HF bar to original 18mm one.
-At 277/293 mi, replaced the fuel pump and fuel filter with the [good, used] ones from my CRX Si. The fuel pump I had previously installed was from an '89 Civic sedan. The pump pickup point (sock filter) is significantly different than that of the 90-91 CRX and my car would starve for fuel under hard left turns at about 1/3 to 1/4 tank of fuel remaining. Also seemed to take longer to start at 1/3-1/4 tank of fuel left. Also found a fine silt-like sediment all over the '89 fuel pump sock filter (reason for adding StaBil)The pump itself could've been going bad. Maybe that's the reason for the high miles, not a lot of fuel at fill up? With the new pump, everything seems normal (normal being how my Si was).
-277/293 mi: Oil catch can installed between PCV system.
-277/293 mi: Tire pressure set to 34 psi front/rear (previously higher and non-uniform pressure in each tire)
-8oz of StaBil added to this tank
-Clutch and tires finally broken in (500mi of normal/ stop and go driving)
2011-08-24 268 mi
431.3 km
8.579 gal (US)
7.14 gal (Imp)
32.48 L
289.11 kWh
($32.25 total for this fill)
31.24 mpg (US)
37.54 mpg (Imp)
7.53 L/100 km
3.2 gal (US)/100 mi
1078.77 Wh/mi
-Mixed city/hwy
-91 octane used.
-TONS of excessive idling while troubleshooting A/C leak and setting timing.
-Car out of alignment for 99% of this tank. Front toe was aligned, rear unable to be aligned (need to fix).
-New clutch still being broken in, so not using my normal driving style.

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