Originally Posted by elkhunter11
If you are talking the GM 2.7 turbo, it is a 4 cylinder, and compares very poorly to the 3.5 twin turbo V6 engines offered by Ford and Toyota. The 3.5s offer more horsepower, more torque, and better fuel economy.
I had a 2019 Tacoma myself, and my F-150 gets the same mileage around town, but it does better on the highway. And if you add a trailer, the Tacoma mileage is horrible, around 15l/100km, while the 3.5 ecoboost burns in the 12s towing my boat.
My 3.5 ecoboost is a 2021, you can't compare pre 2021 ecoboost engines, because in 2021, the 3.5 got a new tune, which increased power, and added about 8% in fuel economy. The 2021 also has the new timing chain and cam phasers, that were redesigned because the previous versions had a lot of reliability issues. As far as turbos go, I know of a couple that a local business has that almost made 400,000 km before requiring replacement. I was told that if you run full synthetic oil, changed every 8000km, it greatly increases turbo life compared to running regular oil, and changing according to the computer, which can allow 15,000km before calling for an oil change. As for reliability, the GM V8 engines have had issues with lifters collapsing, and the Ram Hemi, has had cam issues, so all of these engines have had some issues.
As to my mileage numbers, the 11.5l/100km combined, is over several thousand km, and the 10.2 number was for 500km at 120km/hr. Highway driving at 110, mileage is usually 10-11 l/100km, depending on terrain and wind. If I gave the best highway mileage over 50- 100km, it would be under 9l/100km, because I have seen that kind of mileage on flat ground at 100km/hr, especially with a tail wind. I have also seen the mileage go to over 12l/100, but that was towing my boat, or when headed into a 60km headwind at 120km/hr. Comparing the mileage to my 5.3GM, the 3.5 ecoboost does about 20% better overall. My 5.7 Tundra was terrible on fuel burning around 30-40% more than the 3,5.
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