EPA revised fuel mpg for 1990Q

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Q45tech
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Joined: Tue Apr 30, 2002 3:19 am
Car: 1990 Q45 342,400 miles 22 years ownership with original engine
1995 G20t 5 speed 334,000 miles 16" 2002 wheels - 205/50/16 Sr20ve vvl

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15 city and 20 highway vs old 16/22

18 mpg average

Cost to Drive 25 Miles $5.13 Fuel to Drive 25 Miles 1.47 gal Annual Fuel Cost* $3078 for 15k

http://www.fueleconomy.gov/feg/findacar.htm


Haitian_King
Posts: 2868
Joined: Sat Jan 13, 2007 8:20 pm
Car: 1992 Black Infiniti Q45 /w TCS
1995 Black Infiniti Q45
Location: South NJ/PA/Canada

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Q45tech wrote:15 city and 20 highway vs old 16/22

18 mpg average

Cost to Drive 25 Miles $5.13 Fuel to Drive 25 Miles 1.47 gal Annual Fuel Cost* $3078 for 15k

http://www.fueleconomy.gov/feg/findacar.htm
Nice info.

I still chuckle at the new car commercials that boast high mileage and in small print it'll show something like 25-30 mpg. And these will be FWD 4-bangers. For a 4.5 liter V8, the VH isn't that much of a guzzler is it?

Cost me $24 to fill up with 92 today. Apparently, Wawa has now decided to charge different amounts for cash and credit gas purchases. I wonder why that is? Lucky for me, I paid in cash today as opposed to swiping my debit card.

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Jesda
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18 average. I dont buy it.

Kiven422
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Joined: Thu Aug 23, 2007 7:56 am
Car: '93 Infiniti Q45
'94 Infiniti Q45t

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15/20 Those are my typical results but on some highways i can get up to 24mpg.
Haitian_King wrote:Cost me $24 to fill up with 92 today. Apparently, Wawa has now decided to charge different amounts for cash and credit gas purchases. I wonder why that is? Lucky for me, I paid in cash today as opposed to swiping my debit card.
Because credit costs them too much money.

Q45tech
Moderator
Posts: 14296
Joined: Tue Apr 30, 2002 3:19 am
Car: 1990 Q45 342,400 miles 22 years ownership with original engine
1995 G20t 5 speed 334,000 miles 16" 2002 wheels - 205/50/16 Sr20ve vvl

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15/20 was the point in posting since most of us can do better, closer to the orginal 16/22 and average 19.

The new EPA formula may have overdone it in their quest for better accuracy OR the older Q having less restrictive cats [full dual system].

OBD2 tends to enforce 14.7 A/F at idle whereas old Q ran leaner at idle.

At lot depends on ethanol and I understand the EPA now uses ethanol as the fuel now so those of us here to fore without ethanol may be in for a MPG decrease surprise.

Eighteen years later and the same displacement engines do about the same except for 5,6,7,8 speed transmissions improvement in highway consumption.

I doubt that the losses from AC compressor or bigger alternators have lessened in modern designs if anything they take more HP/fuel to operate.

All about displacement x 60 mph engine rpm or the speed of vehicle above 55 mph........................as the gov scientist knew back when they set it back in March 1974

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lino
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Car: 1991 Q45a Fed-Spec, IQP/White, Texasoil 9 Accumulator Recharge, '93 TCU 1st Gear Start, JWFSB, B&M 70268 Transmission Cooler, BBS Forged Wheels, DRLs, Silverstars, Tint, Very Well Serviced.
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And for my 1991 ACTIVE Q45:

13 city and 17 highway 15 mpg average

Cost to Drive 25 Miles $6.02Fuel to Drive 25 Miles 1.67 gal Annual Fuel Cost* $3612 for 15k

*Annual fuel cost is based on 45% highway driving, 55% city driving, 15000 miles/year and Prem.: $3.61 per gallon

So since I do almost 100% city driving and pay $5.00 / gallon (approx.) and my car is still has the original oxygen sensors and not new etc, what would be more accurate numbers for my car? Anybody good at calculations?


qship96
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Car: 1996 Infiniti Q45

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On my 96Q, I consistantly get 22-23MPG on long highway trips at speeds of 80-90mph using ethanol laced fuel- this has been consistant for life of car

Pure week of around town driving {no highway trips} averages 15-16mpg

Combo around town/some highway trips-17-18MPG

Haitian_King
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Car: 1992 Black Infiniti Q45 /w TCS
1995 Black Infiniti Q45
Location: South NJ/PA/Canada

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qship96 wrote:On my 96Q, I consistantly get 22-23MPG on long highway trips at speeds of 80-90mph using ethanol laced fuel- this has been consistant for life of car

Pure week of around town driving {no highway trips} averages 15-16mpg

Combo around town/some highway trips-17-18MPG
From home to school is about 22 miles. About 17 is highway. My Q lives at 80 mph.



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