What's the real world MPG for 2022 Tahoe RST?
The 2022 Chevrolet Tahoe RST averages 15.5 MPG in real-world mixed driving. This comes from Edmunds' long-term test over 42,000 miles with the 6.2L V8 engine. Highway runs deliver better results at 20 to 21 MPG.
Key Real-World MPG Data
Here's what owners and tests show for the 2022 Tahoe RST:
| Driving Type | MPG Range | Notes |
|---|---|---|
| Mixed (City/Highway) | 15-17 MPG | Edmunds lifetime average: 15.5 MPG over 42,005 miles. Falls 1.5 MPG short of EPA 17 combined. |
| Highway | 20-21 MPG | 70 MPH test on RST Performance: 20.9 MPG. Beats EPA highway by 3 MPG. Best fill: 20 MPG. |
| City | 12-13 MPG | Forum owners report 12.8 MPG in city driving. |
"We've averaged 15.5 MPG after nearly 40,000 miles: that's about 1.5 MPG worse than the EPA estimate," says Jake Sundstrom, editor at Edmunds (Source: Edmunds Long-Term Road Test, 2022).
Why MPG Varies for 2022 Tahoe RST
The RST trim often pairs with the optional 6.2L V8 (420 hp), which prioritizes power over efficiency. EPA estimates 15 city / 20 highway / 17 combined. Real life drops due to:
- Heavy weight (over 5,600 lbs) and size.
- Aggressive driving or loads.
- In 03833 (Exeter, NH area), cold winters and hills cut MPG by 1-2 in winter months.
Forum owners with the 5.3L V8 average 17.3 MPG mixed, 26 MPG highway best. But RST buyers pick 6.2L for speed, so expect 15-17 MPG daily. Diesel option hits 26-32 MPG, but that's not standard RST.
"The 6.2L gives over 500 miles of highway range on its 24-gallon tank," notes Daily Motor's highway test (Source: YouTube MPG Test, 2023). Based on Sidekick data from 127 verified 2022 Tahoe owners as of February 2026, RST models average 16.1 MPG.
Tips to Boost Your Tahoe RST MPG
- Keep tires at 35 PSI cold.
- Use 87 octane gas.
- Drive steady at 65 MPH on highways.
- Avoid idling; remote start warms cabin without running engine long.
Sidekick tracks your real MPG from fill-ups and shows savings tips. Owners save $240/year on fuel by following alerts.
In short, plan for 15-17 MPG mixed in your 2022 Tahoe RST. Highway shines at 20+. Track yours with Sidekick for exact numbers in your 03833 drives.