2022 Suburban stalled in middle of freeway

[B-train]

Gm did make some crappy 4 bangers back in the day (80's-90's) quad 4 for instance. However the other ones like the 2.5 and 3.0 are still used as industrial engines and hold up well. They aren't rock stars, more of like a good old plow horse that keeps plugging away.

New direct inject technology and a turbo really wakes them up and can give much more usable power and economy over a broader range.

 

[tom3]

The Vega, the iron Duke in the Fieros, piston slapping 2.2s in the S trucks, 2.5s in the Nox and Terrains. Their good four bangers seem to be diesels from Izuzu. Can't get too excited about a crew cab Silverado (or a Tahoe?) with a four cylinder engine.

 

[Suburban2024]

The 2.7l rated MPG is only about +1 to the 5.3 on the highway.

2.7: 17 city/20 hwy
5.3: 15 city/19 hwy
6.2: 14 city/18 Hwy
3l Duramax: 22 city/26 Hwy

All numbers from fuel economy.gov for 2022 Silverado 4wd, auto start/stop

Compare Side-by-Side

Compare the MPG of cars and trucks side-by-side. Compare the gas mileage and greenhouse gas emissions of new and used cars and trucks

www.fueleconomy.gov

That's the law of physics. To move same weight at the same speed, same amount of energy (fuel for vehicles) has to be used, no matter what engine it is. The only advantage of the 2.7T engine here is its relatively lighter weight, compared with the weight of 5.3 V8 or 3.0 Duramax.

 

[Geotrash]

That's the law of physics. To move same weight at the same speed, same amount of energy (fuel for vehicles) has to be used, no matter what engine it is. The only advantage of the 2.7T engine here is its relatively lighter weight, compared with the weight of 5.3 V8 or 3.0 Duramax.

Fewer frictional losses in a 4 cylinder and better fuel economy when coasting or under low power. It all adds up.