Used 2018 GMC Sierra 1500 for Sale near Denver, CO
305 results
CarGurus Analysis:
2018 GMC Sierra 1500
With 294 currently listed for sale near Denver, CO and an average price of $27,672.00, 20.1% of 2018 GMC Sierras for sale on CarGurus are rated as good or great deals.
Favorably reviewed: Owners rated the 2018 GMC Sierra 1500 4.44 / 5 stars.
68.7% of 2018 Sierra models on CarGurus are accident free.
The 2018 GMC Sierra 1500 offers a smooth ride, luxurious feel, and an array of safety features, making it a strong contender in the full-size pickup market.
CarGurus Analysis: 2018 GMC Sierra 1500
overall
Summary
With 294 currently listed for sale near Denver, CO and an average price of $27,672.00, 20.1% of 2018 GMC Sierras for sale on CarGurus are rated as good or great deals.
Favorably reviewed: Owners rated the 2018 GMC Sierra 1500 4.44 / 5 stars.
68.7% of 2018 Sierra models on CarGurus are accident free.
The 2018 GMC Sierra 1500 offers a smooth ride, luxurious feel, and an array of safety features, making it a strong contender in the full-size pickup market.
Why it stands out
The 2018 GMC Sierra 1500 is a standout in the competitive full-size pickup segment due to its blend of luxury and functionality. This model year includes a variety of trims, from Base to the Denali, catering to different buyer preferences, whether seeking utilitarian features or luxurious comforts. The cabin is spacious and designed for comfort, making it feel more like a living room than a work truck. Additionally, the Sierra 1500 is equipped with advanced safety features as standard, including a reversing camera and smart tire monitoring systems, enhancing its appeal to families and safety-conscious buyers.
The Sierra 1500 also marks an improvement over its predecessors with the standard inclusion of GMC’s IntelliLink infotainment system, enhancing user connectivity. The engine options offer impressive power and towing capabilities—up to 12,500 pounds when properly equipped—without compromising fuel efficiency. While some buyers may find limitations in rear passenger space and trunk visibility, the overall durability and performance combined with a comfortable ride make the 2018 GMC Sierra 1500 an excellent choice for those in the market for a used pickup.
Other model years to consider
- Average price: $53,893.00
- Good/great deal percentage: 21.8%
- User rating: 5 / 5
- Total listings: 593
- Average price: $45,504.00
- Good/great deal percentage: 20.1%
- User rating: 5 / 5
- Total listings: 527
- Average price: $33,953.00
- Good/great deal percentage: 20.3%
- User rating: 4.28 / 5
- Total listings: 423
This analysis is based on CarGurus' proprietary market data from June 2, 2026, CarGurus experts' opinions, and generative AI.
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4.5 Overall rating
Filter by rating
Ryan A
Reviewed a 2018 GMC Sierra 1500 on Aug 5, 2025
Only thing i didn’t like is the gas mileage. Mine is slightly lifted though and averages about 13 miles to the gallon
Edward E
Reviewed a 2018 GMC Sierra 1500 on Feb 28, 2020
2018 GMC Sierra. Simply the best driving & riding truck I have ever owned. The magnetic ride sets it apart and was the reason I purchased a 2018 vs the newer body style without it. It’s also the reason I choose it over similar Ford and Dodge trucks.
Anonymous
Reviewed a 2018 GMC Sierra 1500 on Mar 3, 2021
very luxurious and drives incredible smooth.. Wouldnt know its a pickup truck
Jason J
Reviewed a 2018 GMC Sierra 1500 on Aug 20, 2022
Great truck, but not liking this heavy shudder from the torque converter.
2018 GMC Sierra 1500 Trims
| Trim type | MSRP |
|---|---|
| SLT Double Cab 4WD | $46,000 |
| Base | $29,000 |
| SLE Crew Cab 4WD | $44,700 |
| Base Double Cab 4WD | $37,000 |
| SLE Double Cab 4WD | $42,100 |
| SLT Crew Cab | $45,200 |
| Denali Crew Cab 4WD | $56,000 |
| SLT Crew Cab 4WD | $48,400 |
2018 GMC Sierra 1500 Price Trends
CarGurus tracks the prices of millions of used car listings every year. See how the average price of 2018 GMC Sierra 1500 prices has changed over time.
See more price trends2018 GMC Sierra 1500 Pricing Analysis: Denver, CO Market Report
Pricing by Nearby Locations
Market Area: Denver, CO
Key Insights
- Highest Priced Market: Cheyenne, WY ($37,998) stands out as the most expensive location, potentially due to limited availability and demand for trucks in the region.
- Lowest Pricing Found in Longmont: The market in Longmont, CO ($27,629) offers the best value, indicating possibly higher inventory turnover or price-sensitive consumers.
- Moderate Price Variance: Locations like Colorado Springs ($29,323) and Fort Collins ($26,758) show a more balanced pricing scenario, reflecting moderate demand levels.
City-Level Pricing
| City | Total Listings | Avg Price |
|---|---|---|
| Cheyenne, WY | 267 | $37,998 |
| Pueblo, CO | 264 | $30,197 |
| Colorado Springs, CO | 272 | $29,323 |
| Castle Rock, CO | 297 | $28,242 |
| Grand Junction, CO | 238 | $28,094 |
| Fort Collins, CO | 258 | $26,758 |
| Longmont, CO | 293 | $27,629 |
Pricing Analysis by Model Year
Key Insights
- Newer Models Demand Premium Pricing: The 2026 GMC Sierra 1500 shows a significant premium at $67,610, suggesting a strong market demand for the latest models despite being priced almost 76.6% above MSRP.
- Steep Depreciation Trends: The depreciation for older models is evident, with the 2015 model priced at $20,634, reflecting approximately a 22% decline from its original MSRP.
- Best Value Year: The 2022 GMC Sierra 1500 is positioned attractively at $45,398, representing a -28.6% depreciation, making it a solid option for buyers looking for a newer vehicle without the new car price.
Model Year Pricing
| Model Year | Original MSRP | Avg Price | Price vs MSRP |
|---|---|---|---|
| 2026 | $38,300 | $67,610 | +76.6% |
| 2025 | $38,300 | $53,371 | +39.3% |
| 2024 | $37,700 | $52,652 | +39.5% |
| 2023 | $37,100 | $48,663 | +30.9% |
| 2022 | $35,400 | $45,398 | +28.3% |
| 2021 | $30,100 | $36,480 | +21.1% |
| 2020 | $29,600 | $34,039 | +14.9% |
| 2019 | $29,600 | $30,992 | +4.7% |
| 2017 | $28,405 | $24,751 | -12.9% |
| 2016 | $27,815 | $26,019 | -6.5% |
| 2015 | $26,670 | $20,634 | -22.6% |
| 2014 | $26,075 | $20,778 | -20.2% |
These recommendations are based on CarGurus' proprietary market data from June 4, 2026, CarGurus experts' opinions, and generative AI.
