GMC Sierra 4WD AT4X 2025 running costs in United States
Official U.S. EPA (fueleconomy.gov) figure for the 2025 GMC Sierra 4WD AT4X: 15–19 mpg (US). At United States prices (US$1.16/L diesel), driving 12,000 miles a year costs about US$2,779 — US$0.14 per mile.
Official figures — 2025 GMC Sierra 4WD AT4X
| Fuel types | Diesel · Petrol |
|---|---|
| Official consumption | 15.0–19.0 mpg (US) |
| Engine size | 3,000–6,200 cc |
| Configurations in source data | 2 |
| Data source | U.S. EPA (fueleconomy.gov) |
What it costs to run in United States
| Diesel (19.0 mpg (US)) | US$2,779/year |
|---|---|
| Estimated annual running cost | US$2,779/year ≈ US$232/month |
Assumes 12,000 miles a year and the current average United States prices shown above (BLS/FRED US city average regular, Jul 2026). Insurance is not included because it depends on your age, history and the policy — add it in the full ownership calculator. Servicing, tyres and repairs also vary by car and driver.
A 2025 GMC Sierra 4WD AT4X at different annual mileages
Running costs scale almost linearly with mileage: this car's certified 19 mpg (US) fixes the cost of every extra 1,000 miles.
| Driven a year | Fuel or electricity |
|---|---|
| 8,000 miles | US$1,853 |
| 12,000 miles | US$2,779 |
| 18,000 miles | US$4,168 |
Over five years at 12,000 miles a year, fuel or electricity alone comes to roughly US$13,895; over ten years, about US$27,789. Insurance, servicing, tyres and repairs are on top of that and are excluded throughout this page.
Is the 2025 GMC Sierra 4WD AT4X cheap to run? How it ranks in United States
Among the 276 diesel cars with official figures in our United States dataset, the 2025 GMC Sierra 4WD AT4X is the 270th most efficient — 1 is the most efficient.
It uses 12.4 L/100km against a market median of 9.0 L/100km and a market average of 8.9 L/100km. The middle half of diesel cars sit between 7.4 and 10.2 L/100km. This car is therefore about 36.8% above the typical diesel car — worth roughly US$1,024 a year more at 12,000 miles a year.
How it compares with other diesel cars in United States
The average diesel car in our United States dataset uses 9.0 L/100km. The 2025 GMC Sierra 4WD AT4X uses 12.4 L/100km — about 36.8% more than that average, or roughly US$748 extra a year at 12,000 miles.
2025 GMC Sierra 4WD AT4X — configurations in the official data
| Fuel | Consumption | CO₂ | Engine | Power | Source variant |
|---|---|---|---|---|---|
| Diesel | 12.4 L/100km | — | 3000 cc | — | — |
| Petrol | 15.7 L/100km | — | 6200 cc | — | — |
Figures are the official certified values recorded in the U.S. EPA (fueleconomy.gov), grouped across 2 configurations. Real-world consumption is typically higher than the certified figure.
2025 GMC Sierra 4WD AT4X running costs — frequently asked questions
How much does a 2025 GMC Sierra 4WD AT4X cost to run in United States?
About US$2,779 a year (US$232 a month) at the market average price of US$1.16 per litre of diesel. That is US$2,779 of fuel or electricity, with no annual roadworthiness test or road tax added because this market does not levy one on private cars. Insurance, servicing, tyres and repairs are not included.
How much does a 2025 GMC Sierra 4WD AT4X cost per mile to run?
US$0.14 per kilometre (US$0.23 per mile) in fuel or electricity alone, based on the certified 19 mpg (US) and United States average diesel prices.
What is the fuel consumption of a 2025 GMC Sierra 4WD AT4X?
The official certified figure for this model-year is 12.4–15.7 L/100km. Source: U.S. EPA (fueleconomy.gov). Real-world consumption is usually higher than the certified figure.
Is the 2025 GMC Sierra 4WD AT4X cheap to run compared with other diesel cars in United States?
Yes, in relative terms: it ranks 270 of 276 diesel cars in our United States dataset, where 1 is the most efficient. It uses 12.4 L/100km against a market median of 9.0 L/100km — about 36.8% more than the typical car, or roughly US$1,024 a year extra at miles the market default.
How the 2025 GMC Sierra 4WD AT4X running costs are calculated
Every figure on this page is calculated from official certified data — nothing is estimated, and no figure is carried over from a similar car:
- Consumption and CO₂ are the certified values recorded in U.S. EPA (fueleconomy.gov), taken across the 2 configurations held for this model-year.
- Annual cost is consumption × mileage × the market's current average price for diesel, at 12,000 miles a year.
- The roadworthiness test and road tax use the United States national figures shown above. This market has no annual road tax for private cars, so none is charged here.
- Deliberately excluded: insurance, servicing, tyres, repairs and depreciation. They depend on the driver, the policy and the individual car, so putting a number on them would mean inventing one.
To price a specific car with your own mileage and local prices, use the full running-cost calculator for United States.
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These are estimates built from official certified figures and current average prices. They are not financial advice. Verify the exact figure for the car you are buying — consumption varies by trim, tyres and driving style.