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Mack mDrive automated-manual transmission

Mack mDRIVE Automated Manual Transmission
Mack’s mDrive AMT is based on the Volvo I-Shift design and has been engineered for “seamless” integration with Mack MP Series diesel engines. M-Drive features two-speed reverse and is available with single and dual rear transmission PTO mounting options.


Featured reviews:

40-truck fleet in the Southeast

5 Rating
Reviewer Comments I’ve been very pleasantly surprised with the mDrive. The fuel economy seems to go up every time I service them. Average mpg for our older trucks is 5 mpg. We’re getting 6.5 out of the mDrive now and I think we’ll get to 7 mpg before it’s over.

I’ve been very pleasantly surprised with the mDrive. I’m old school, so I didn’t know what to expect. We haul aluminum and steel coils. So the drivers took a little convincing. But I’ve been very impressed so far.

These are my first-ever AMTs. So I don’t have enough experience with them to tell you I’d change this or that feature. But the transmission works, and does exactly what I want it to. And I don’t like to work on trucks, so I’m happy. We have had absolutely no maintenance issues with them at all. And we’ve got one unit with well over 100,000 miles on it.

The warranty on the mDrive is really strong. So I felt like it would be a good unit if Mack was backing it up like that. It’s a whole different truck and powertrain from what we normally run. But we’re already getting better fuel economy than we do on the rest of the trucks in our fleet. The fuel economy seems to go up every time I service them. Average MPG for our older trucks is 5 mpg. We’re getting 6.5 out of the mDrive now and I think we’ll get to 7 mpg before it’s over.

Dealer and OEM support? I don’t know. We’ve haven’t had any issues. So I haven’t had to call them. And, really, that’s the best support I can think of – having the transmission work that well out of the box.

See the breakdown
  • Acquisition Cost 5
  • Overall Unit Design 5
  • Serviceability 5
  • Reliability and Durability 5
  • Fuel Economy 5
  • Driver Efficiency 5
  • Return on Investment 5
  • Impact on Fleet Fuel Economy 5
  • Impact on Driver Retention 5
  • OEM Support 5
  • Dealer Support 5
  • Access to Vehicle Inspection Points 5

15-truck private fleet in Southwest

4.8 Rating
Reviewer Comments

It thinks for itself.

See the breakdown
  • Acquisition Cost 5
  • Overall Unit Design 5
  • Serviceability 5
  • Reliability and Durability 5
  • Fuel Economy 5
  • Driver Efficiency 5
  • Return on Investment 5
  • Impact on Fleet Fuel Economy 5
  • Impact on Driver Retention 5
  • OEM Support 4
  • Dealer Support 4
  • Access to Vehicle Inspection Points 5

20-truck tank fleet in Southeast

4.7 Rating
Reviewer Comments It’s a tough transmission. We’re a tanker fleet – haul gasoline – and it’s more than up to the job.

I like the mDrive and for the most part they’ve been trouble free. We had an early unit that ran out of fluid – and we never could find any leak. Mack replaced it. But that was strange.

It’s a tough transmission. We’re a tanker fleet – haul gasoline – and it’s more than up to the job. The drivers always complain. Their biggest complaint is that the mDrive gets them up into higher gears faster than they’d like. I try to tell them they’re not driving a race car. But they’re Old School and think they have to keep the engine wound up to get anything done. But when we have to bring in a rental truck with a manual transmission now, they whine about that and want the mDrive. You can’t keep them happy.

See the breakdown
  • Acquisition Cost 5
  • Overall Unit Design 5
  • Serviceability 5
  • Reliability and Durability 5
  • Fuel Economy 3
  • Driver Efficiency 5
  • Return on Investment 5
  • Impact on Fleet Fuel Economy 3
  • Impact on Driver Retention 5
  • OEM Support 5
  • Dealer Support 5
  • Access to Vehicle Inspection Points 5

Other reviews: 

15-truck flatbed/specialty fleet in Canada

Reviewer comments

I’m really getting sold on these transmissions. We’re running one now. We’re really putting it through the ropes in vocational hauling and it’s standing up well. I might consider going all the way with mDrives next time I buy trucks.

They’re just safer and they’re childproof. We’re not burning up clutches on that truck they way we do with manuals. We’re in Canada hauling Super Bs with 62,500 lbs gross and they do just fine with that payload.

I was leery about them at first. But I’m a Volvo/Mack fan and watch what they do in Europe. So I knew they’d had it over there for 10 years. When they brought it to Canada, I let it sit for a couple of years before I decided to try one. And I’m very happy with it. It takes the guesswork out for the driver and the fuel economy is there. I’m very impressed with the transmission.


*Averaged from 5 qualified fleet reviews

4.5 Average*
  • Acquisition Cost 4.4
  • Overall Unit Design 4.2
  • Serviceability 4.2
  • Reliability and Durability 4.6
  • Fuel Economy 4.6
  • Driver Efficiency 4.8
  • Return on Investment 4.6
  • Impact on Fleet Fuel Economy 4.2
  • Impact on Driver Retention 4.2
  • OEM Support 4.6
  • Dealer Support 4.8
  • Access to Vehicle Inspection Points 4.2