# GM V8 SUVs Still at 2009 Gas Mileage

> GM's V8 SUVs match 2009 fuel economy despite 17 years of progress.
- Title: GM V8 SUVs Still at 2009 Gas Mileage · The Drive | Shortify
- Summary: GM's V8 SUVs match 2009 fuel economy despite 17 years of progress. GM's most efficient gasoline-powered full-size SUVs maintain 17 mpg from 2009 to 2025…
- Keywords: chevy tahoe, gmc yukon, v8 engine, fuel economy, 2009, 2025, cars, technology, SUVs, Still, Gas, Mileage
- Source: The Drive — https://thedrive.com/news/gms-v8-suvs-get-the-same-gas-mileage-they-did-in-2009
- Author: Byron Hurd
- Published: 2026-10-07T20:09:24+00:00
- Read time: 1 min
- Topics: gm, chevy tahoe, gmc yukon, v8 engine, fuel economy, 2009, 2025, cars, technology
## GM V8 SUVs
GM's most efficient gasoline-powered full-size SUVs get 17 mpg, same as 2009 model year.
## 17-Year Stagnation
GM's full-size triplets (Chevy Tahoe/Suburban and GMC Yukon) maintain 17 mpg with 5.3-liter V8 engines.
## Truck Improvement
GM's full-size pickups improved from 18 mpg to 20 mpg in 17 years using smaller engines.
## Hybrid Comparison
Toyota Prius improved from 50 to 57 mpg in 17 years, a 14% gain versus GM's 11%.
## SUV Regression
GM's big SUVs dropped from 19 mpg to 17 mpg after 2021, with no improvement since.
## New V8 Engines
GM introduced Duramax I6 in 2021, but diesel efficiency lags due to current fuel prices.
## Key takeaway

GM's most efficient gasoline-powered full-size SUVs maintain 17 mpg from 2009 to 2025, unchanged in 17 years.