Best MPG Diesel Cars for Sale in San Marcos, TX

2020 GMC Sierra 1500

AT4 Crew Cab 4WD

114,419 miles

$34,995

Fair Deal

BeeCave, TX

30 mi away

Year:: 2020
Make:: GMC
Model:: Sierra 1500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 277 hp 3L I6 Diesel
Exterior color:: Gray (Satin Steel Metallic)
Combined gas mileage:: 24 MPG
Fuel type:: Diesel
Interior color:: Jet Black With Kalahari Accents
Transmission:: Automatic
Mileage:: 114,419
Stock number:: F112955A
VIN:: 1GTU9EET5LZ317134

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2023 Chevrolet Silverado 1500

RST Crew Cab 4WD

51,889 miles

$40,591

Good Deal

San Antonio, TX

44 mi away

Year:: 2023
Make:: Chevrolet
Model:: Silverado 1500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 3L I6 Diesel
Exterior color:: Black
Combined gas mileage:: 24 MPG
Fuel type:: Diesel
Interior color:: Jet Black
Transmission:: Automatic
Mileage:: 51,889
Stock number:: PZ307032
VIN:: 1GCUDEE82PZ307032

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2024 Chevrolet Silverado 1500

High Country Crew Cab 4WD

29,581 miles

$52,392

Good Deal

Boerne, TX

46 mi away

Year:: 2024
Make:: Chevrolet
Model:: Silverado 1500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 3L I6 Diesel
Exterior color:: Sterling Gray Metallic
Combined gas mileage:: 25 MPG
Fuel type:: Diesel
Interior color:: Jet Black/Nightshift Blue
Transmission:: Automatic
Mileage:: 29,581
Stock number:: RZ174352T
VIN:: 1GCUDJE86RZ174352

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2021 RAM 1500

Limited Crew Cab 4WD

57,333 miles

$40,488

Good Deal

Certified Pre-Owned

Gonzales, TX

41 mi away

Year:: 2021
Make:: RAM
Model:: 1500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 260 hp 3L V6 Biodiesel
Exterior color:: Gray (Granite Crystal Metallic Clearcoat)
Combined gas mileage:: 25 MPG
Fuel type:: Biodiesel
Interior color:: Black
Transmission:: 8-Speed Automatic
Mileage:: 57,333
Stock number:: MN549221P
VIN:: 1C6SRFHM7MN549221

2021 Jeep Wrangler

Unlimited Rubicon 4WD

70,698 miles

$29,484

Great Deal

Austin, TX

25 mi away

Year:: 2021
Make:: Jeep
Model:: Wrangler
Body type:: SUV / Crossover
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 260 hp 3L V6 Diesel
Exterior color:: Nacho Clearcoat
Combined gas mileage:: 23 MPG
Fuel type:: Diesel
Interior color:: Black
Transmission:: 8-Speed Automatic
Mileage:: 70,698
Stock number:: 657948U1
VIN:: 1C4JJXFM5MW657948

2024 GMC Sierra 1500

Elevation Crew Cab 4WD

5,194 miles

$47,300

Great Deal

San Antonio, TX

45 mi away

Year:: 2024
Make:: GMC
Model:: Sierra 1500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 3L I6 Diesel
Exterior color:: Cardinal Red
Combined gas mileage:: 25 MPG
Fuel type:: Diesel
Interior color:: Jet Black
Transmission:: Automatic
Mileage:: 5,194
Stock number:: F0996X
VIN:: 3GTUUCE88RG370515

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2023 GMC Sierra 1500

Elevation Crew Cab 4WD

43,887 miles

$41,609

Good Deal

Boerne, TX

46 mi away

Year:: 2023
Make:: GMC
Model:: Sierra 1500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 3L I6 Diesel
Exterior color:: White
Combined gas mileage:: 24 MPG
Fuel type:: Diesel
Interior color:: Black
Transmission:: Automatic
Mileage:: 43,887
Stock number:: 26011A
VIN:: 3GTUUCE89PG357639

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2025 Chevrolet Silverado 1500

ZR2 Crew Cab 4WD

22,621 miles

$57,984

Good Deal

Austin, TX

40 mi away

Year:: 2025
Make:: Chevrolet
Model:: Silverado 1500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 3L I6 Diesel
Exterior color:: Slate Gray Metallic
Combined gas mileage:: 21 MPG
Fuel type:: Diesel
Interior color:: Jet Black/Graystone
Transmission:: Automatic
Mileage:: 22,621
Stock number:: G113135T
VIN:: 3GCUKHE86SG113135

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2025 Chevrolet Silverado 1500

ZR2 Crew Cab 4WD

4,906 miles

$62,350

Great Deal

Certified Pre-Owned

Austin, TX

39 mi away

Year:: 2025
Make:: Chevrolet
Model:: Silverado 1500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 3L I6 Diesel
Exterior color:: Black
Combined gas mileage:: 21 MPG
Fuel type:: Diesel
Interior color:: Jet Black/Graystone
Transmission:: Automatic
Mileage:: 4,906
Stock number:: MB10546
VIN:: 3GCUKHE84SG129222

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2020 Chevrolet Silverado 1500

LT Crew Cab 4WD

108,128 miles

$25,995

Good Deal

San Antonio, TX

49 mi away

Year:: 2020
Make:: Chevrolet
Model:: Silverado 1500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 277 hp 3L I6 Diesel
Exterior color:: White
Combined gas mileage:: 26 MPG
Fuel type:: Diesel
Interior color:: Black
Transmission:: Automatic
Mileage:: 108,128
Stock number:: 1911
VIN:: 3GCUYDET8LG286815

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2024 GMC Sierra 1500

AT4 Crew Cab 4WD

34,486 miles

$53,977

Good Deal

Boerne, TX

46 mi away

Year:: 2024
Make:: GMC
Model:: Sierra 1500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 3L I6 Diesel
Exterior color:: Black
Combined gas mileage:: 25 MPG
Fuel type:: Diesel
Interior color:: Black
Transmission:: Automatic
Mileage:: 34,486
Stock number:: 26186A
VIN:: 3GTUUEE85RG175483

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2023 Chevrolet Silverado 1500

LTZ Crew Cab 4WD

44,579 miles

$44,787

Fair Deal

Certified Pre-Owned

Bastrop, TX

39 mi away

Year:: 2023
Make:: Chevrolet
Model:: Silverado 1500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 3L I6 Diesel
Exterior color:: Black
Combined gas mileage:: 24 MPG
Fuel type:: Diesel
Interior color:: Gideon/Very Dark Atmosphere
Transmission:: Automatic
Mileage:: 44,579
Stock number:: 260339A
VIN:: 3GCUDGE88PG239024

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2023 Chevrolet Silverado 1500

RST Crew Cab 4WD

51,889 miles

$40,591

Good Deal

San Antonio, TX

44 mi away

Year:: 2023
Make:: Chevrolet
Model:: Silverado 1500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 3L I6 Diesel
Exterior color:: Black
Combined gas mileage:: 24 MPG
Fuel type:: Diesel
Interior color:: Jet Black
Transmission:: Automatic
Mileage:: 51,889
Stock number:: PZ307032
VIN:: 1GCUDEE82PZ307032

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2022 Chevrolet Silverado 1500

LT Trail Boss Crew Cab 4WD

102,207 miles

$31,994

Great Deal

Certified Pre-Owned

New Braunfels, TX

14 mi away

Year:: 2022
Make:: Chevrolet
Model:: Silverado 1500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 277 hp 3L I6 Diesel
Exterior color:: Gray
Combined gas mileage:: 24 MPG
Fuel type:: Diesel
Interior color:: Black
Transmission:: Automatic
Mileage:: 102,207
Stock number:: UZ219691
VIN:: 1GCUYFET2NZ219691

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2020 GMC Sierra 1500

AT4 Crew Cab 4WD

114,504 miles

$31,724

Good Deal

Austin, TX

43 mi away

Year:: 2020
Make:: GMC
Model:: Sierra 1500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 277 hp 3L I6 Diesel
Exterior color:: Onyx Black
Combined gas mileage:: 24 MPG
Fuel type:: Diesel
Interior color:: Jet Black With Kalahari Accents
Transmission:: Automatic
Mileage:: 114,504
Stock number:: LZ331230
VIN:: 1GTU9EET5LZ331230

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2024 Chevrolet Silverado 1500

LTZ Crew Cab 4WD

24,613 miles

$46,991

Good Deal

Boerne, TX

46 mi away

Year:: 2024
Make:: Chevrolet
Model:: Silverado 1500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 3L I6 Diesel
Exterior color:: Dark Ash Metallic
Combined gas mileage:: 25 MPG
Fuel type:: Diesel
Interior color:: Gideon/Very Dark Atmosphere
Transmission:: Automatic
Mileage:: 24,613
Stock number:: RG163012C
VIN:: 3GCUDGE80RG163012

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2022 Jeep Gladiator

Willys Crew Cab 4WD

48,143 miles

$29,594

Great Deal

Certified Pre-Owned

La Vernia, TX

38 mi away

Year:: 2022
Make:: Jeep
Model:: Gladiator
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 260 hp 3L V6 Diesel
Exterior color:: Firecracker Red Clearcoat
Combined gas mileage:: 25 MPG
Fuel type:: Diesel
Interior color:: Black
Transmission:: 8-Speed Automatic
Mileage:: 48,143
Stock number:: 1543
VIN:: 1C6JJTAM7NL180370

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2022 Chevrolet Silverado 1500

LTZ Crew Cab 4WD

55,060 miles

$39,495

Good Deal

Buda, TX

14 mi away

Year:: 2022
Make:: Chevrolet
Model:: Silverado 1500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 277 hp 3L I6 Diesel
Exterior color:: Black
Combined gas mileage:: 24 MPG
Fuel type:: Diesel
Interior color:: Jet Black
Transmission:: Automatic
Mileage:: 55,060
Stock number:: T12460
VIN:: 1GCUYGET5NZ219139

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2021 GMC Sierra 1500

Denali Crew Cab 4WD

45,138 miles

$44,981

Fair Deal

San Antonio, TX

37 mi away

Year:: 2021
Make:: GMC
Model:: Sierra 1500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 277 hp 3L I6 Diesel
Exterior color:: Black
Combined gas mileage:: 24 MPG
Fuel type:: Diesel
Interior color:: Black
Transmission:: Automatic
Mileage:: 45,138
Stock number:: 257201C
VIN:: 1GTU9FET1MZ257201

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2025 Chevrolet Silverado 1500

High Country Crew Cab 4WD

3,332 miles

$58,995

Great Deal

San Antonio, TX

37 mi away

Year:: 2025
Make:: Chevrolet
Model:: Silverado 1500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 3L I6 Diesel
Exterior color:: White
Combined gas mileage:: 23 MPG
Fuel type:: Diesel
Interior color:: Black
Transmission:: Automatic
Mileage:: 3,332
Stock number:: 218789A
VIN:: 1GCUKJE89SZ218789

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2022 GMC Sierra 1500

Elevation Crew Cab 4WD

46,328 miles

$42,993

Fair Deal

San Antonio, TX

37 mi away

Year:: 2022
Make:: GMC
Model:: Sierra 1500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 277 hp 3L I6 Diesel
Exterior color:: Silver
Combined gas mileage:: 24 MPG
Fuel type:: Diesel
Interior color:: Black
Transmission:: Automatic
Mileage:: 46,328
Stock number:: 520964C
VIN:: 3GTUUCET1NG520964

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2020 Chevrolet Silverado 1500

RST Crew Cab RWD

116,416 miles

$23,962

Good Deal

Boerne, TX

47 mi away

Year:: 2020
Make:: Chevrolet
Model:: Silverado 1500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: 4X2
Engine:: 277 hp 3L I6 Diesel
Exterior color:: Northsky Blue Metallic
Combined gas mileage:: 28 MPG
Fuel type:: Diesel
Interior color:: Black
Transmission:: Automatic
Mileage:: 116,416
Stock number:: LG386914A
VIN:: 3GCPWDET2LG386914

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2022 Chevrolet Silverado 1500

LT Crew Cab 4WD

48,996 miles

$37,997

Fair Deal

Selma, TX

29 mi away

Year:: 2022
Make:: Chevrolet
Model:: Silverado 1500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 277 hp 3L I6 Diesel
Exterior color:: Northsky Blue Metallic
Combined gas mileage:: 24 MPG
Fuel type:: Diesel
Interior color:: Jet Black
Transmission:: Automatic
Mileage:: 48,996
Stock number:: CC260083A
VIN:: 1GCUDDET8NZ606231

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2024 GMC Sierra 1500

Denali Crew Cab 4WD

25,503 miles

$56,800

Good Deal

Certified Pre-Owned

San Antonio, TX

45 mi away

Year:: 2024
Make:: GMC
Model:: Sierra 1500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 3L I6 Diesel
Exterior color:: Volcanic Red Tintcoat
Combined gas mileage:: 25 MPG
Fuel type:: Diesel
Interior color:: Atmosphere/Brownstone
Transmission:: Automatic
Mileage:: 25,503
Stock number:: F51551A
VIN:: 1GTUUGE85RZ266278

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