I recently spent 3 weeks driving a 2018 Tacoma SR5 4x2 V6, coincidentally, right after spending
2 weeks driving a Chevy Colorado LT 4x2 V6.
Excuse my french, but the Tacoma is a flat out piece of shit and the only way Toyota is selling any of them is the name alone. I come from a Toyota family, I've been employed by Toyota, I've only ever driven Toyota products, and I will sit here and tell you the Colorado is a vastly superior truck to the Tacoma in about every conceivable way.
The 3.6L/8AT combo is not only an indisputably superior powertrain with regard to power delivery, drivability and efficiency, but it is so much smoother and more refined that it makes that iteration of the 2GR-FKS feel like it was dug out of the dirt in a landfill. Driving the Colorado like a reckless teenager, I got 20.7MPG. The Tacoma got 16.7MPG. My 2016 Limited (full time) 4x4 returns 16.5MPG average. These are all manual calculations.
I got out of the Colorado and into the Tacoma, turned the key, and it felt like starting a lawnmower because there are so many vibrations in the drivetrain, not to mention it being loud and lacking what many would deem modern NVH standards.
The Colorado motor is great - it's predictable and smooth throughout the power band, not to mention linear and very powerful. The Tacoma is gutless and frighteningly dead under 4k RPM, at which time, the motor magically comes to life with a scary force that throws you forward until 6k RPM. It is enough force to break the rear wheels free at 40MPH or so. Try pulling out of a line of traffic, putting your foot down, inching out and then hitting 4k RPM and taking off like a bat out of hell with the wheels struggling for traction. Welcome to driving the Tacoma in city traffic - it feels out of control and unmanageable in some scenarios.
The 6AT has this weird characteristic with kick down where when you're coasting to a stop, as the transmission drops gears, it lurches you forward so much so that you feel like you need to hit the brakes. The Chevy's 8AT is, again, much superior.
The only two things I like about that powertrain (Tacoma's 2GR-FKS) more than the 1GR is:
- Faster gear changes (our 5AT is painfully slow and clunky at this - the 6AT is better, but modern 8ATs are MUCH faster)
- Better passing power on the highway (with this being a high revving motor, merging and overtaking on the highway is a lot easier than in the 4Runner).
I can say that if the 2GR-FKS/6AT goes into the 4Runner as it is, I would probably not buy it. The outdated 1GR with a confused, clunky 5AT is easier to drive because it's got the power band for a truck/SUV.