History of the exact car
A shared engine says nothing about accidents or odometer changes. Review records for the full VIN.
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2021 Buick Encore GX Essence specifications
Build KL4MMGSL-M · 1.3L 3cyl · All-wheel drive · Sport Utility Vehicle (SUV)
Explore the specifications recorded for VIN pattern KL4MMGSL-M. Start here to understand this version, then check the full VIN for an individual car.
NHTSA vPIC decode · Pattern-level specifications
- Decoded Sep 9, 2026
- 4,049 known VINs
- 58 listings reported active
- Engine
- 1.3L 3cyl In-Line
- Transmission
- Automatic
- Drive
- All-wheel drive
- Body
- Sport Utility Vehicle (SUV)
- Seats
- 5
- Weight class
- Class 1C
- Median asking price
- $20,195
The essentials, explained
Engine, transmission & body specifications
As filed by Buick with NHTSA for this VIN pattern. Fields the filing does not record are left out entirely — a missing row means no recorded value, not a missing feature.
Engine
- Displacement
- 1.3 L
- Cylinders
- 3
- Configuration
- In-Line
- Engine model
- L3T - L3, SIDI, VVT, ALUM
- Valve train
- Dual Overhead Cam (DOHC)
- Turbocharged
- Yes
- Fuel type
- Gasoline
Drivetrain
- Drive type
- All-wheel drive
- Transmission
- Automatic
- Brake system
- Hydraulic
Body & chassis
- Body class
- Sport Utility Vehicle (SUV)/Multi-Purpose Vehicle (MPV)
- NHTSA body type
- MULTIPURPOSE PASSENGER VEHICLE (MPV)
- Seats
- 5
- Seat rows
- 2
- Manufacturer
- GENERAL MOTORS LLC
Weight rating
- GVWR class
- Class 1C
- GVWR
- 4,001–5,000 lb
Gross vehicle weight rating is the loaded ceiling set by the manufacturer, not the car's own weight.
Driver assistance in the recorded decode
- Forward collision warning Standard
- Crash imminent braking Standard
- Lane departure warning Standard
- Lane keeping assistance Standard
- Adaptive cruise control Optional
- Blind spot warning Standard
Systems the filing does not record are not listed above. Check the window sticker of the exact car before you rely on any single feature.
The market for this VIN pattern
What are sellers asking?
Asking prices from dealer listings associated with this VIN pattern in the United States. Mileage, condition, options and location can change the value of an individual vehicle.
$20,195 median asking price · 59 listings · as of Sep 6, 2026
Median $20,195
2nd percentile $11,999 98th percentile $23,966
Put the model year in context
Compare asking prices by model year
Explore 3 model years with VIN prefix KL4MMGSL. These are different vehicles: price differences also reflect mileage, condition, equipment and the listings available. They are not a depreciation forecast.
Median asking prices · bars begin at $0
Highlighted: 2021, the model year on this page. Prices and update dates are specific to each linked year.
How this VIN pattern is read
A 17-character VIN carries two kinds of information: what was built, and which one it is. This page is the first kind — the nine highlighted positions.
VIN positions 1 through 8 read KL4MMGSL and position 10 reads M. Those nine characters define this build. Position 9 and positions 11 through 17 describe the check digit, assembly plant and production sequence; they are not part of this pattern.
| Positions | Characters | What they encode |
|---|---|---|
| 1–3 | KL4 | GENERAL MOTORS LLC · World manufacturer identifier |
| 4–8 | MMGSL | Model, body style, engine and restraint system |
| 9 | × | Check digit — computed per vehicle, not part of the build |
| 10 | M | Model year — 2021 |
| 11 | × | Assembly plant |
| 12–17 | ×××××× | Production sequence number, unique to each vehicle |
NHTSA safety ratings
Crash-test ratings apply to the tested vehicle configuration, not automatically to every version of this model.
Tested vehicle: 2021 Buick Encore GX SUV AWD
Overall
★★★★★ 5 / 5
Frontal crash
★★★★★ 5 / 5
Side crash
★★★★★ 5 / 5
Rollover
★★★★ ★ 4 / 5
2 recall campaigns are recorded for the 2021 Encore GX. Recalls are issued per VIN range — check the VIN of the car you are looking at, not the model.
From a version to your vehicle
Is this the car you’re looking at?
Enter the full VIN — the 17 characters on the windshield or title — to open the vehicle’s page.
Manufacturer reference library
Manuals & reference documents
2021 Buick Encore GX PDF Brochure
2021 · US · Model-year brochure. Equipment can vary by vehicle.
Open manufacturer document ↗Documents may cover multiple versions. Check applicability to the individual vehicle; documents load only when opened.
Explore actual vehicles
4,049 known VINs for this pattern
Every VIN we have decoded to KL4MMGSL-M is associated with this pattern in our records. Shared specifications do not mean shared history, condition or installed options.
- 4,049 Known VINs
- 58 Listings reported active
- 59 Priced listings
- $20,195 Median asking
Vehicles of this build
A fixed sample of 3 known vehicles associated with this pattern — each with its own history page. The sample refreshes quarterly, not nightly, so it stays put between visits.
Browse all 16 VIN record groups
- Group 0 249 VINs
- Group 1 273 VINs
- Group 2 241 VINs
- Group 3 231 VINs
- Group 4 265 VINs
- Group 5 221 VINs
- Group 6 261 VINs
- Group 7 248 VINs
- Group 8 244 VINs
- Group 9 244 VINs
- Group A 254 VINs
- Group B 246 VINs
- Group C 267 VINs
- Group D 272 VINs
- Group E 291 VINs
- Group F 242 VINs
Groups use a stable internal sorting key. Their labels are not VIN characters, locations or model variants.
Neighboring configurations
Other factory configurations of the Encore GX, each with its own recorded specifications. The set is fixed by the VIN patterns themselves, so it does not shuffle as prices or inventory move.
- 2022 Preferred 1.2L 3-cyl · Sport utility vehicle suv mult · FWD 4,398 known VINs · $18,900 median
- 2022 Preferred 1.3L 3-cyl · Sport utility vehicle suv mult · AWD 5,288 known VINs · $18,524 median
- 2022 Select 1.2L 3-cyl · Sport utility vehicle suv mult · FWD 3,398 known VINs · $19,636 median
- 2022 Select 1.3L 3-cyl · Sport utility vehicle suv mult · AWD 3,441 known VINs · $20,990 median
- 2023 Preferred 1.2L 3-cyl · Sport utility vehicle suv mult · FWD 9,235 known VINs · $19,995 median
Keep going
Useful answers, without the guesswork
2021 Buick Encore GX: specification questions
What engine code is recorded for KL4MMGSL-M?
The recorded engine model is L3T - L3, SIDI, VVT, ALUM. This is pattern-level data; confirm the installed engine on a vehicle that may have been modified.
Is this an original window sticker?
No. This page summarizes decoded VIN-pattern specifications. An original sticker or build record is needed to verify the optional equipment of a particular car.
Are the known VINs a production total?
No. These are VINs observed in our records. The count does not establish total production or rarity.
Does a missing specification mean the feature is absent?
No. Missing fields mean that a value is not recorded in this decode. Check the individual vehicle and its manufacturer documentation.
Where this data comes from
Specification fields are decoded from the manufacturer's filings in the NHTSA vPIC database, keyed on VIN positions 1–8 and 10. We publish the filed values as they stand and leave out anything the filing does not record.
Prices are asking prices from 59 live dealer listings decoded to this build , last updated September 6, 2026 . They are what sellers ask, not what buyers paid.
Vehicle counts come from the 4,049 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.
About the NHTSA vPIC data source ↗
Pattern decode updated September 9, 2026.