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Navistar MaxxForce 13 engine

MaxxForce_13_2

The Navistar MaxxForce 13 is an inline 6-cylinder, 13-liter engine, with ratings up to 475 horsepower and 1,700 lb.-ft. of torque. Peak torque is achieved at 1,000 rpm and holds steady to 1,200 rpm for less down-shifting on hills and quicker up-shifts when accelerating.


Featured reviews:

1,000 truck flatbed fleet in Southeast

3.9 Rating
Reviewer Comments Overall, the drivers like the responsiveness and the MPG numbers we were told to expect are being realized. We've seen fuel economy improve from 1 to 5 percent compared with the EGR MaxxForce13 engines.

The mechanical integrity of the newer MaxxForce engine has been significantly better than the older, advanced-EGR engine. Overall, the drivers like the responsiveness and the MPG numbers we were told to expect are being realized. We’ve seen fuel economy improve from 1 to 5 percent compared with the EGR MaxxForce13 engines.

So far, we have not had any major maintenance issues with the engine. I would like to see the overall weight of the engine go down with smaller radiators and coolers now that SCR/DEF is getting used versus the advanced-EGR emissions system.

The dealer network in some geographical areas are more responsive to the customers. There are still dealers where the wait to get a truck diagnosed and repaired is still excessive.

Packaging and access to the engine is good — basically the same as on previous ProStar trucks.

See the breakdown
  • Suitability for your application/business 4
  • Overall reliability/durability 3
  • Overall engine design 4
  • Serviceability 4
  • OEM support 4
  • Dealer support 3
  • Fuel economy 4
  • Horsepower rating 5
  • Torque rating 5
  • Acquisition cost 3
  • Resale value 4

Private carrier on West Coast

3 Rating
Reviewer Comments My local dealer is excellent and is the reason that I buy International trucks.

They work OK for us. I have four of them. We’re a municipal fleet and we’ve got between 50,000 and 60,000 miles on them. One of them has never had a fan clutch. The other three have gone through six fan clutches – although that’s more of a Horton issue than a Navistar issue.

My local dealer is excellent and is the reason that I buy International trucks. And they do a good job of supporting us although the factory has been a pain in the ass to deal with on warranty support. I’ve been able to get a little help from the factory on a few issues – but it’s been like pulling teeth.

The main problem is emissions. Now, in my opinion, the MaxxForce isn’t any better, or worse, than the other engines in terms of emissions. We just don’t have enough seasoning on this technology to make it work well yet. And now we’re about to have to deal with Greenhouse Gas regulations and all that stuff.

See the breakdown
  • Suitability for your application/business 5
  • Overall reliability/durability 2
  • Overall engine design 3
  • Serviceability 2
  • OEM support 0
  • Dealer support 5
  • Fuel economy 3
  • Horsepower rating 4
  • Torque rating 4
  • Acquisition cost 3
  • Resale value 2

Private carrier in Midwest

4.3 Rating
Reviewer Comments Fuel economy is good. Depending on various factors, we see from 6.5 to 7.5 mpg.

The main thing I like is that it’s a real lightweight engine. It’s 1,000 pounds lighter than the Cummins. So that helps us out tremendously. Fuel economy is good. Depending on various factors, we see from 6.5 to 7.5 mpg.

The emissions stuff hasn’t been a problem for us. International had their issues just like everyone else did. But they worked them all out and it’s a good engine for us today.

See the breakdown
  • Suitability for your application/business 5
  • Overall reliability/durability 3
  • Overall engine design 4
  • Serviceability 3
  • OEM support 5
  • Dealer support 4
  • Fuel economy 5
  • Horsepower rating 5
  • Torque rating 5
  • Acquisition cost 5
  • Resale value 3

*Averaged from 5 qualified fleet reviews

4.1 Average*
  • Suitability for your application/business 4.8
  • Overall reliability/durability 3.4
  • Overall engine design 4
  • Serviceability 3.6
  • OEM support 4.6
  • Dealer support 4
  • Fuel economy 4.75
  • Horsepower rating 4.4
  • Torque rating 4.4
  • Acquisition cost 4
  • Resale value 3.6