what is mpi?

Asked by Apr 09, 2012 at 01:27 PM about the 1994 Jeep Grand Cherokee Laredo 4WD

Question type: General

the vehicle that we are purchasing has mpi or mpr-not sure what that means and how it helps gas mileage

2 Answers


MPI usually stands for Multi-Point Injection. Most modern cars have this. A lot of older small engine cars had SPI (Single Point Injection), a lot of car manufacturers don't advertise MPI as much these days which is probably why not many know of the abbreviation.

2 of 2 people found this helpful.

To see which one is in that car,you need to take a look to the intake manifold.MPI,Multipoint injection will have same amount of injectors as there are cylinders.Injector is mostly "plastic stick" on intake runner that has wires coming out of it.If the car is SPI,then injectors will be most likely to be found under the air cleaner.Spi will "fire" its injector's at once every time 1 of the cylinders are at top dead center.MPI will only fire injector on that particular cylinder,not all at once.It is more precise way to feed fuel to the cylinder's therefore creating much more cleaner burn,and more effiency from the motor.That's why it helps on gas mileage.

1 of 1 people found this helpful.

Your Answer

Jeep Grand Cherokee Experts

  • #1
  • #2
    Tom Demyan
  • #3
View All

Related Models For Sale

Used Jeep Cherokee
535 Great Deals out of 61,834 listings starting at $2,999
Used Ford Explorer
1,266 Great Deals out of 70,144 listings starting at $1,000
Used Toyota 4Runner
348 Great Deals out of 27,129 listings starting at $1,800
Used Jeep Wrangler
518 Great Deals out of 19,538 listings starting at $1,999
Used Chevrolet Tahoe
829 Great Deals out of 42,144 listings starting at $1,987
Used Ford F-150
3,297 Great Deals out of 224,474 listings starting at $1,200
Used Ford Mustang
598 Great Deals out of 39,958 listings starting at $1,895
Used Honda Accord
1,120 Great Deals out of 74,854 listings starting at $1,100

Used Cars For Sale

2018 Jeep Grand Cherokee Laredo 4WD For Sale
6,174 listings starting at $26,993
2017 Jeep Grand Cherokee Laredo 4WD For Sale
22 Great Deals out of 956 listings starting at $22,986
2016 Jeep Grand Cherokee Laredo 4WD For Sale
26 Great Deals out of 534 listings starting at $19,000
2015 Jeep Grand Cherokee Laredo 4WD For Sale
27 Great Deals out of 1,186 listings starting at $17,995
2014 Jeep Grand Cherokee Laredo 4WD For Sale
19 Great Deals out of 709 listings starting at $14,000

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.