09/04/2026
GM’s 2.7L Turbomax 4-Cylinder Just Made My TOP 5…
I honestly didn’t expect the 2.7L TurboMax to make my Top 5 half-ton truck engines for 2026 — and I’m not even sure I wanted it to. 😂
Do I personally want a four-cylinder engine in a full-size 1500 truck? Probably not. But at some point, you have to look at the real-world results.
The 2.7L TurboMax has now been around for roughly seven years, heading into its eighth, and overall it has developed a pretty solid track record. We simply haven't seen the widespread, consistent catastrophic engine problems that would make me seriously question this engine.
In fact, I think you can make a pretty strong argument that the 2.7L TurboMax is currently the most reliable engine GM offers in its half-ton trucks. That's something I never thought I'd be saying.
It's also important to remember that GM designed this as a purpose-built truck engine. It has a massive stroke, strong internals and an overall design intended to produce serious low-end torque from a relatively small four-cylinder package.
Is it perfect? Absolutely not.
I've towed my 8,000-lb enclosed trailer with the TurboMax on my regular towing loop, and it struggled. If heavy towing is a major part of what you do with your half-ton, this would not be my first choice.
But for someone who wants a GM half-ton and doesn't regularly tow heavy? Based on what we've seen from these engines so far, I think the TurboMax deserves considerably more credit than it gets.
Enough credit to put it at #5 out of 15 engines on my 2026 list.
Would you actually buy a four-cylinder Silverado or Sierra?