Onboard computer mpg - how is it calculated?

Asked by Apr 19, 2014 at 09:04 PM about the 2012 Ford Focus

Question type: Maintenance & Repair

When I zero the onboard memory for mpg the readout is quite responsive to driving
conditions for many miles.  Eventually, though, it doesn't vary nearly as much as driving
conditions change.  Just interested, what is the formula or algorithm the computer uses to
calculate the mpg?

1 Answer

9,585

It is average based. The computer compairs the amount of fuel it injects to the run time since the last reset.

Your Answer

Add photo

Related Questions

  • I have a 2010 focus 6 answers

    put a new battery In but now the miles it shows for the gas that's in the tank is wrong how do you reset It.

    2010 Ford Focus SE

    -

    Maintenance & Repair

  • help with diagnosis report please - (Ford Contour) 6 answers

    Report Print VIN: 1FALP65L5WK175717 Report#: 101 Vehicle: 1998 FORD CONTOUR Date of Report: 1/18/2017 8:48:13 AM Engine: V6, 2.5L; DOHC; 24V Mileage Reported: 60,000 POWERTRAIN DIAGNOSTIC TROUBLE C...

    1998 Ford Focus

    -

    Maintenance & Repair

  • New rims for my focus 2 answers

    I have a 2009 Ford focus se sedan. I'm trying to change my rims from factory to after market. So I'm wondering if I could fit a size 16 4 lug, instead of 15 4 lug without doing any modifications f...

    2009 Ford Focus SE

    -

    Car Customization

  • I need the code for my Ford Radio. The serial is V244172 3 answers

    2008 Ford Focus S

    -

    General

  • modifying my focus 3 answers

    i have a focus (1.6L) at home and i want to change its wheels but i keep hearing roumors that if you change the wheels you'll get less torque from the car since TORQUE = FORCE * PERPENDICULAR DISTANCE...

    Ford Focus

    -

    Car Customization

Search Ford Focus Questions

Ford Focus Experts

#1 Tom Demyan
Tom Demyan
Reputation 1,270
#2 dandyoun
dandyoun
Reputation 970
#3 Su'ad Barakat
Su'ad Barakat
Reputation 860
View All

Related Models For Sale

Used Ford Fusion
1,060 Great Deals out of 78,462 listings starting at $1,250
Used Honda Civic
668 Great Deals out of 77,418 listings starting at $1,000
Used Ford Fiesta
161 Great Deals out of 16,582 listings starting at $2,999
Used Chevrolet Cruze
886 Great Deals out of 90,961 listings starting at $3,500
Used Ford Mustang
361 Great Deals out of 44,495 listings starting at $1,000
Used Toyota Corolla
874 Great Deals out of 74,435 listings starting at $1,500
Used Mazda MAZDA3
234 Great Deals out of 28,930 listings starting at $895
Used Honda Accord
812 Great Deals out of 81,611 listings starting at $899
Used Hyundai Elantra
563 Great Deals out of 54,871 listings starting at $1,000
Used Ford Escape
1,119 Great Deals out of 90,859 listings starting at $1,295
Used Toyota Camry
1,096 Great Deals out of 96,274 listings starting at $1,250
Used Chevrolet Malibu
1,008 Great Deals out of 85,694 listings starting at $1,995
Used Nissan Altima
1,079 Great Deals out of 82,567 listings starting at $670
Used Volkswagen GTI
94 Great Deals out of 6,111 listings starting at $2,299

Used Cars For Sale

2017 Ford Focus For Sale
20,203 listings starting at $11,477
2016 Ford Focus For Sale
83 Great Deals out of 11,164 listings starting at $9,775
2015 Ford Focus For Sale
124 Great Deals out of 5,434 listings starting at $7,588
2014 Ford Focus For Sale
213 Great Deals out of 7,329 listings starting at $5,855
2013 Ford Focus For Sale
98 Great Deals out of 3,337 listings starting at $4,900