2018 GMC Sierra

$10,966
from
1,106
listings
$11K–$65K
price range
Download Infographic
Low$10,966
High$64,995
From$10,966
Avg Mileage102,215 mi
Fresh

Sourced from 1,106 active dealer listings as of

2018 GMC Sierra Trims

All Trims Combined
From$10,966
$11K–$65K
1,106 listings102,215 avg miles
AT4
From$18,600
9,750 listings|$19K–$133K
AT4X
From$35,491
3,929 listings|$35K–$109K
Denali
From$4,500
11,676 listings|$5K–$104K
Denali Ultimate
From$44,601
3,546 listings|$45K–$101K
Elevation
From$13,500
18,101 listings|$14K–$97K
Limited
From$12,459
31 listings|$12K–$30K
Pro
From$12,980
6,540 listings|$13K–$69K
SL
From$2,709
45 listings|$3K–$21K
SLE
From$1,650
4,915 listings|$2K–$70K
SLT
From$1,500
15,792 listings|$2K–$140K
W/T
From$3,000
99 listings|$3K–$25K

2018 GMC Sierra Pricing

Price Trend

-7.5%
$9K$14K$18K$23K$27KMar 26Mar 26Mar 26$9,667
3 data pointsAs of Mar 26

Plenty of options. Let us narrow it down.

1,106 active listings means opportunity, but also overwhelm. Set your criteria and we'll surface the best matches.

Set up smart alertsFrom $5/week

GMC Sierra Fuel Economy

17–20mpg combined
·
15-18city
·
19-24hwy
·
$2,200-$3,400/yr

The 2018 GMC Sierra delivers 17 to 20 MPG combined across 14 powertrain combinations. If fuel cost matters to you, pay attention to engine and drivetrain. The spread is significant.

By Trim
Sierra 15 Hybrid 2WD - Automatic 8-spd
20mpg
5.3L 8-cyl · Rear-Wheel Drive
18 city24 hwy~$2,200/yr4/10 Average
Sierra C15 2WD - Automatic 6-spd
20mpg
4.3L 6-cyl · Rear-Wheel Drive
18 city24 hwy~$2,200/yr4/10 Average
Sierra C15 2WD - Automatic 6-spd
19mpg
5.3L 8-cyl · Rear-Wheel Drive
16 city23 hwy~$2,300/yr3/10 Poor
Sierra K15 4WD - Automatic 6-spd
19mpg
4.3L 6-cyl · 4-Wheel Drive
17 city22 hwy~$2,300/yr3/10 Poor
Sierra 15 Hybrid 4WD - Automatic 8-spd
18mpg
5.3L 8-cyl · 4-Wheel Drive
16 city21 hwy~$2,450/yr3/10 Poor
Sierra C15 2WD - Automatic 8-spd
18mpg
5.3L 8-cyl · Rear-Wheel Drive
16 city22 hwy~$2,450/yr3/10 Poor
Sierra K15 4WD - Automatic 6-spd
18mpg
5.3L 8-cyl · 4-Wheel Drive
16 city22 hwy~$2,450/yr3/10 Poor
Sierra C15 2WD - Automatic 8-spd
17mpg
6.2L 8-cyl · Rear-Wheel Drive
15 city21 hwy~$3,400/yr3/10 Poor
Sierra C15 Cab Chassis 2WD - Automatic 6-spd
17mpg
5.3L 8-cyl · Rear-Wheel Drive
15 city20 hwy~$2,600/yr3/10 Poor
Sierra K15 4WD - Automatic 8-spd
17mpg
6.2L 8-cyl · 4-Wheel Drive
15 city20 hwy~$3,400/yr3/10 Poor
Sierra K15 4WD - Automatic 8-spd
17mpg
5.3L 8-cyl · 4-Wheel Drive
15 city20 hwy~$2,600/yr3/10 Poor
Sierra K15 Cab Chassis 4WD - Automatic 6-spd
17mpg
5.3L 8-cyl · 4-Wheel Drive
15 city19 hwy~$2,600/yr3/10 Poor

Source: U.S. Environmental Protection Agency (EPA)

Where to Find 2018 GMC Sierra

39States

Texas has the most inventory at 13%, with options spread across 39 states. Willing to ship? Your selection opens up significantly.

Geographic distribution reflects all active listings for this model, not just 2018.

2018 GMC Sierra: Questions Buyers Ask

Pricing, reliability, and ownership answers

Is the 2018 GMC Sierra a good car to buy?

The 2018 GMC Sierra has its strengths and its watch-outs. Check the safety section for recall details and the pricing data to see if the numbers work for you.

What's the gas mileage of the 2018 GMC Sierra?

Depending on configuration, the 2018 GMC Sierra delivers 17–20 MPG combined. Choose wisely. The full comparison shows how engine choice affects your wallet.

How does the 2018 compare to other GMC Sierra years?

Each GMC Sierra model year has different pricing, recall counts, and owner satisfaction patterns. Compare all available years on the GMC Sierra overview page.

Get GMC Sierra market updates

We'll email you when prices shift or new data comes in for the 2018 GMC Sierra.

No spam. We'll only reach out about GMC Sierra features.