There are several engine options available on the 2020 Chevy Colorado. Most of the trims come with an upgrade option outside of the base. The base pickup uses a 2.5L 4-cylinder engine with a 6-speed automatic transmission. This particular engine provides 200 horsepower and 191 lb-ft of torque. The WT comes with the same base engine, although you can upgrade to a larger 3.6L V6 engine with an 8-speed automatic transmission. The larger engine provides 308 horsepower and 275 lb-ft of torque. Having more speeds in the automatic transmission does help with regards to towing as it raises the upshift to offer more power while accelerating while it also raises the downshift points to help slow the truck down (instead of just braking, which can cause fishtailing).
The LT trim comes with three engine options. This includes the mentioned 2.5L 4-cylinder and the 3.6L V6 in addition to the 2.8L Duramax Turbo-Diesel 4-cylinder engine. The diesel engine will put out 181 horsepower and 369 lb-ft of torque.
As for the Z71, the pickup only comes with a 3.6L V6 engine and 8-speed automatic transmission, so if you're interested in this trim model, you'll likely need to go with this engine configuration.
The ZR2 comes with either the 3.6L V6 or the 2.8L Duramax Turbo-Diesel 4-cylinder engine.
As you can imagine, with all the different engine designs, transmission types, drivetrain options, and design configurations, there are several fuel economy numbers to consider. The most accurate fuel economy numbers will come directly from the truck you're looking at on the lot. The MPG numbers printed on the one-sheet of the truck will show you specifics for the base, bed size, and all the other variables in question.
However, it is still a good idea to know what kind of fuel economy each engine type can potentially offer you. This way, you'll have a better idea of what to expect.
With the 2.5L engine, you can expect to net around 20 miles per gallon in the city and 26 MPG on the highway. These numbers drop to 19 MPG in the city and 24 MPG on the highway when you go from 2WD to 4WD.
If you decide to spring for the 3.6L V6, the 2WD option will max out at 18 MPG in the city and 25 MPG on the highway. The 4WD design also takes a slight dip, but not by much, lowering to 17 MPG in the city and 24 MPG on the highway. As for the diesel engine, you'll end up with around 20 MPG in the city and 30 MPG on the highway.
If you're interested in a pickup, you probably like the idea of being able to load up a trailer and hitching it to the rear of the truck. The 2.5L engine on the base models of the pick will let you tow up to 3,500 pounds. Should you upgrade to the larger V6 engine, you will boost the towing potential to 7,000 pounds. With the fuel economy is not all that different between the V6 and 4-cylinder, the extra money for the larger engine will pay off when it comes to towing potential.
For maximum towing, you'll want to spring for the Turbo-Diesel engine. This engine, which also has the best fuel economy of all the truck engines, boosts the towing to 7,700 pounds.