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
412 Great Deals out of 41,180 listings starting at $1,800
Used Ford Explorer
810 Great Deals out of 63,290 listings starting at $1,495
Used Jeep Wrangler
281 Great Deals out of 15,908 listings starting at $2,997
Used Toyota 4Runner
237 Great Deals out of 21,560 listings starting at $1,500
Used Chevrolet Tahoe
647 Great Deals out of 36,708 listings starting at $1,800
Used Ford F-150
2,225 Great Deals out of 182,703 listings starting at $1,500
Used Chevrolet Camaro
421 Great Deals out of 31,920 listings starting at $2,395

Used Cars For Sale

2018 Jeep Grand Cherokee Laredo 4WD For Sale
1,363 listings starting at $28,904
2017 Jeep Grand Cherokee Laredo 4WD For Sale
9 Great Deals out of 5,558 listings starting at $24,900
2016 Jeep Grand Cherokee Laredo 4WD For Sale
476 listings starting at $26,500
2015 Jeep Grand Cherokee Laredo 4WD For Sale
17 Great Deals out of 770 listings starting at $18,850
2014 Jeep Grand Cherokee Laredo 4WD For Sale
14 Great Deals out of 928 listings starting at $13,688

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.