M/T: Ford F-150 diesel first drive
Posted: Mon Apr 30, 2018 6:49 am
http://www.motortrend.com/cars/ford/f-1 ... F61B82BECF
Engaging horsepower rant.
The good news is, it gets up to 30 mpg highway depending on configuration. Hopefully the GM I6 diesel will match or exceed that.
But here's the thing with 1/2 ton diesels: there is a reason we haven't really seen them before. They don't really make any sense.
Despite the torque, they really aren't great at towing because it turns out you need horsepower to move weight, especially at highway speeds.
And even the fuel economy isn't enough to make a solid case over the (higher horsepower) turbo V6 offerings (which, by the way, have great drivability, too).
So this engine has 250 hp and 440 lb-ft. Which number defines overall performance? The horsepower, as usual.
Another problem is trim levels. Ford makes you get Lariat or higher to get the diesel which means you're dropping $46,410 at the absolute minimum and that's probably with 2WD and no other options.
I will say the 3/4 ton trucks with their horsepower-race turbo diesels are a different animal. They are heavy but tow really well, and are actually kind of quick.
Engaging horsepower rant.
The good news is, it gets up to 30 mpg highway depending on configuration. Hopefully the GM I6 diesel will match or exceed that.
But here's the thing with 1/2 ton diesels: there is a reason we haven't really seen them before. They don't really make any sense.
Despite the torque, they really aren't great at towing because it turns out you need horsepower to move weight, especially at highway speeds.
And even the fuel economy isn't enough to make a solid case over the (higher horsepower) turbo V6 offerings (which, by the way, have great drivability, too).
So this engine has 250 hp and 440 lb-ft. Which number defines overall performance? The horsepower, as usual.
440 is a healthy number but that doesn't magically translate into unlimited amounts of power - that's what power is for. Torque is not power. Look at that description. It turns out that a 5,000 lb truck towing 6,500 lbs (only 57% of the tow rating) is going to be slow with only 250 hp. All 440 lb-ft is going to do is make it feel like it has more than 250 hp, when you are going like 0-30 or whatever. But what feels like a huge reserve of power at low speeds turns into a wheeze-fest at higher speeds. That's what continues to annoy me about these light duty diesel engines.The actual towing, though, was less impressive, and it only suffered when we traded up to a 6,500-pound boat and trailer. All that low-end torque is still good for getting off the line with a trailer and keeping pace with city traffic, but the turbo lag is more pronounced leaving a stop, and there’s some jerkiness from the transmission at low speeds. On top of the lag, getting going quickly can also be hindered by some rear wheel slip as the truck struggles for grip in the middle of all that weight. Getting out on the highway, the diesel underwhelms. Above 50 mph, the diesel has very little power in reserve for accelerating or overtaking. If you want to pass a big rig on the highway, you’ll need to take a run at it. Climbing even a small hill at freeway speeds, about the best you can hope for is maintaining your speed with your foot to the floor, and 6,500 pounds is less than two-thirds of the truck’s maximum 11,400-pound tow rating.
Another problem is trim levels. Ford makes you get Lariat or higher to get the diesel which means you're dropping $46,410 at the absolute minimum and that's probably with 2WD and no other options.
It's not fast (performance) and doesn't really pay for itself (economy), except in a very specific case of needing to tow regularly something that is less than what you'd normally step up to a 3/4 ton for (like ~5,000-6,000 lbs). I guess it makes sense we haven't seen these on the market because I think the OEMs already understood all of this. That is another reason GM didn't release the Duramax 4500 9 years ago. It just didn't really make a case for itself.it’s going to take a while to see $4,000 worth of savings at the pump. If you’re the lead-footed type even when towing, you’re going to find the diesel frustrating and an EcoBoost engine more your style, and you’ll just have to eat the extra fuel cost. Power or fuel economy, you choose.
I will say the 3/4 ton trucks with their horsepower-race turbo diesels are a different animal. They are heavy but tow really well, and are actually kind of quick.