Skip to main content
Skip to Filters
206 listings
  • New Listing
    • 51,930 miles
    • No accidents, 2 owners, personal use only
    • 24 City / 32 Hwy MPG
    • CarMax (In-stock online)
    • Transfer available from TN to TX*
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Franklin, TN / 598 miles away from Frisco, TX

    CarMax values transparency and wants you to love your next car, not settle on it. Certain vehicles may have unrepaired safety recalls. Check nhtsa.gov...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    27 Combined MPG (24 City/32 Highway)

    Listing Information:

    VIN: WAUE8AF26LN088750
    Stock: 27269581
    Certified Pre-Owned: No

    • 54,546 miles
    • No accidents, 1 owner, personal use
    • 22 City / 29 Hwy MPG
    • CarMax (In-stock online)
    • Transfer available from KS to TX*
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Merriam, KS / 420 miles away from Frisco, TX

    CarMax values transparency and wants you to love your next car, not settle on it. Certain vehicles may have unrepaired safety recalls. Check nhtsa.gov...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    24 Combined MPG (22 City/29 Highway)

    Listing Information:

    VIN: WAUM2AF24LN068543
    Stock: 27787847
    Certified Pre-Owned: No

    • 51,972 miles
    • No accidents, 1 owner, personal use
    • 22 City / 29 Hwy MPG
    • Ewing Buick GMC (8 mi away)
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Plano, TX / 8 miles away from Frisco, TX

    2019 Audi A6 3.0T Premium Plus quattro quattro, Black w/Leather Seating Surfaces, 20 Sport Package, 4-Zone Automatic Climate Control, Audi Active Lane...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    25 Combined MPG (22 City/29 Highway)

    Listing Information:

    VIN: WAUL2AF26KN093082
    Stock: KN093082
    Certified Pre-Owned: No
    Listed since: 09-10-2025

  • New Listing
    Stock photo**
    • 79,784 miles
    • 20 City / 29 Hwy MPG
    • Planet Lincoln Dallas Love Field (22 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Dallas, TX / 22 miles away from Frisco, TX

    quattro, Leather.Recent Arrival! Clean CARFAX. 20/29 City/Highway MPGVisit us at https://www.planetlincolndallaslovefield.com/ Vehicle pricing is...

    AutoCheck Vehicle History Summary Unavailable.

    Features and Specs:

    23 Combined MPG (20 City/29 Highway)

    Listing Information:

    VIN: WAUF3AFC4JN045310
    Stock: S0271A
    Certified Pre-Owned: No
    Listed since: 09-20-2025

    • 25,469 miles
    • No accidents, 1 owner, corporate fleet vehicle
    • 24 City / 31 Hwy MPG
    • Go Luxury Auto Group (26 mi away)
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Dallas, TX / 26 miles away from Frisco, TX

    Priced below KBB Fair Purchase Price! Odometer is 4341 miles below market average!CARFAX One-Owner.2023 Audi A6 45 Premium Plus quattro quattro 4D ...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: No

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    27 Combined MPG (24 City/31 Highway)

    Listing Information:

    VIN: WAUE3BF25PN027626
    Stock: A27626
    Certified Pre-Owned: No
    Listed since: 07-29-2025

    • 73,261 miles
    • 1 accident, 2 owners, personal use
    • 22 City / 29 Hwy MPG
    • TexasCarsDirect.com (19 mi away)
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Dallas, TX / 19 miles away from Frisco, TX

    This 2019 Audi A6 Prestige, has Ibis White exterior and Pearl Beige interior color. 73,261 miles. Stock Number 116205. You can connect with us by call...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: No

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    25 Combined MPG (22 City/29 Highway)

    Listing Information:

    VIN: WAUM2AF28KN116205
    Stock: 116205
    Certified Pre-Owned: No
    Listed since: 05-30-2025

  • Price Drop
    $33,991
    great price
    $1,892 below market
    • 44,603 miles
    • No accidents, 2 owners, personal use
    • 22 City / 29 Hwy MPG
    • Driveway (In-stock online)
    • Home delivery*
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Bend, OR / 1,515 miles away from Frisco, TX

    CarFax No Accidents Reported,High Demand,Apple CarPlay,Back-Up Camera,Blind Spot Monitor,Bluetooth,Brake Assist,Heated Seats,Heated Steering Wheel,Key...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    24 Combined MPG (22 City/29 Highway)

    Listing Information:

    VIN: WAUM2BF23MN030678
    Stock: MN030678A
    Certified Pre-Owned: No

    • 26,293 miles
    • No accidents, 1 owner, personal use
    • 24 City / 31 Hwy MPG
    • Autos of Dallas - Irving (25 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Irving, TX / 25 miles away from Frisco, TX

    Gray Metallic 2023 Audi A6 45 Premium NAV,CAM,SUNROOF,HTD STS,BLIND SPOT quattro quattro 7-Speed Automatic 2.0L 4-Cylinder TFSI A6 45 Premium NAV,CAM,...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    27 Combined MPG (24 City/31 Highway)

    Listing Information:

    VIN: WAUD3BF25PN086784
    Stock: 086784
    Certified Pre-Owned: No
    Listed since: 08-07-2025

    • 48,136 miles
    • No accidents, 1 owner, personal use only
    • 24 City / 31 Hwy MPG
    • Autos of Dallas - Plano (10 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Plano, TX / 10 miles away from Frisco, TX

    Premium Pkg, Navigation, Back-Up Camera, Sun Roof, Heated Seats, Keyless Go, Parktronic, Blind Spot Monitor, Lane Keeping Assist, 19" Wheels, Heated S...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    27 Combined MPG (24 City/31 Highway)

    Listing Information:

    VIN: WAUD3BF25PN019375
    Stock: 019375
    Certified Pre-Owned: No
    Listed since: 05-21-2025

  • Price Drop
    $30,998
    fair price
    $1,089 below market
    • 41,388 miles
    • No accidents, 2 owners, personal use
    • 22 City / 29 Hwy MPG
    • CarMax (In-stock online)
    • Transfer available from MN to TX*
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Maplewood, MN / 844 miles away from Frisco, TX

    CarMax values transparency and wants you to love your next car, not settle on it. Certain vehicles may have unrepaired safety recalls. Check nhtsa.gov...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: Yes

    Features and Specs:

    25 Combined MPG (22 City/29 Highway)

    Listing Information:

    VIN: WAUM2AF21KN099960
    Stock: 27612303
    Certified Pre-Owned: No

  • Price Drop
    $25,723
    fair price
    $959 below market
    • 35,699 miles
    • No accidents, 1 owner, personal use only
    • 24 City / 32 Hwy MPG
    • Driveway (In-stock online)
    • Home delivery*
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Fort Lauderdale, FL / 1,110 miles away from Frisco, TX

    CarFax No Accidents Reported,CarFax 1-Owner,Low Mileage,Rare Find,Apple CarPlay,Blind Spot Monitor,Bluetooth,Brake Assist,Heated Seats,Heated Steering...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    27 Combined MPG (24 City/32 Highway)

    Listing Information:

    VIN: WAUE8AF22KN129759
    Stock: TDKN129759
    Certified Pre-Owned: No

  • Stock photo**
    • 83,379 miles
    • No accidents, 2 owners, personal use
    • 24 City / 32 Hwy MPG
    • Alliance Auto Haus (36 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Arlington, TX / 36 miles away from Frisco, TX

    Visit Alliance Auto Haus LLC to shop our great deals. You can contact us or call 6**-3**-5*** to schedule your test drive today. Child Safety Door Loc...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    27 Combined MPG (24 City/32 Highway)

    Listing Information:

    VIN: WAUD8AF20KN122241
    Stock: 10545
    Certified Pre-Owned: No
    Listed since: 07-30-2025

  • New Listing
    • 54,008 miles
    • No accidents, 2 owners, personal use
    • 24 City / 31 Hwy MPG
    • CarMax Arlington/Ft. Worth (36 mi away)
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Fort Worth, TX / 36 miles away from Frisco, TX

    CarMax values transparency and wants you to love your next car, not settle on it. Certain vehicles may have unrepaired safety recalls. Check nhtsa.gov...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    27 Combined MPG (24 City/31 Highway)

    Listing Information:

    VIN: WAUE3BF26PN035105
    Stock: 27494729
    Certified Pre-Owned: No

    • 35,154 miles
    • No accidents, 2 owners, personal use
    • 22 City / 29 Hwy MPG
    • Carvana (In-stock online)
    • Home delivery*
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in San Antonio, TX / 278 miles away from Frisco, TX

    At Carvana, we go miles beyond the extra mile. That's why we provide you with a convenient, fast, and hassle-free car buying experience that puts you ...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    25 Combined MPG (22 City/29 Highway)

    Listing Information:

    VIN: WAUL2AF28KN025785
    Stock: 2003941424
    Certified Pre-Owned: No
    Listed since: 07-29-2025

  • New Listing
    • 51,366 miles
    • No accidents, 1 owner, rental vehicle
    • 24 City / 31 Hwy MPG
    • Enterprise Car Sales Plano (10 mi away)
    • Home delivery*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Plano, TX / 10 miles away from Frisco, TX

    Transfer of vehicle from another location to your neighborhood Enterprise Car Sales may require payment of a non-refundable transfer fee to begin the ...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: No

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    27 Combined MPG (24 City/31 Highway)

    Listing Information:

    VIN: WAUD3BF22PN048834
    Stock: 8DXVBC
    Certified Pre-Owned: No
    Listed since: 09-04-2025

  • New Listing
    $24,590
    fair price
    $386 below market
    • 77,335 miles
    • No accidents, 2 owners, personal use
    • 22 City / 29 Hwy MPG
    • Carvana (In-stock online)
    • Home delivery*
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Cincinnati, OH / 797 miles away from Frisco, TX

    At Carvana, we go miles beyond the extra mile. That's why we provide you with a convenient, fast, and hassle-free car buying experience that puts you ...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    25 Combined MPG (22 City/29 Highway)

    Listing Information:

    VIN: WAUL2AF21KN088484
    Stock: 2003947328
    Certified Pre-Owned: No
    Listed since: 09-02-2025

  • New Listing
    $32,998
    fair price
    $584 below market
    • 34,339 miles
    • No accidents, 2 owners, corporate fleet vehicle
    • 22 City / 29 Hwy MPG
    • CarMax (In-stock online)
    • Transfer available from CA to TX*
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Roseville, CA / 1,417 miles away from Frisco, TX

    CarMax values transparency and wants you to love your next car, not settle on it. Certain vehicles may have unrepaired safety recalls. Check nhtsa.gov...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: No

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    24 Combined MPG (22 City/29 Highway)

    Listing Information:

    VIN: WAUL2AF20MN046763
    Stock: 27747104
    Certified Pre-Owned: No

    • 36,139 miles
    • No accidents, 3 owners, corporate fleet vehicle
    • 22 City / 29 Hwy MPG
    • Carvana (In-stock online)
    • Home delivery*
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in San Antonio, TX / 278 miles away from Frisco, TX

    At Carvana, we go miles beyond the extra mile. That's why we provide you with a convenient, fast, and hassle-free car buying experience that puts you ...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: No

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    25 Combined MPG (22 City/29 Highway)

    Listing Information:

    VIN: WAUL2AF21KN076027
    Stock: 2004037923
    Certified Pre-Owned: No
    Listed since: 09-08-2025

  • Price Drop
    $26,990
    fair price
    $693 below market
    • 51,869 miles
    • No accidents, 2 owners, personal use
    • 22 City / 29 Hwy MPG
    • Carvana (In-stock online)
    • Home delivery*
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Los Angeles, CA / 1,236 miles away from Frisco, TX

    At Carvana, we go miles beyond the extra mile. That's why we provide you with a convenient, fast, and hassle-free car buying experience that puts you ...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    25 Combined MPG (22 City/29 Highway)

    Listing Information:

    VIN: WAUL2AF2XKN026968
    Stock: 2003733801
    Certified Pre-Owned: No
    Listed since: 05-16-2025

    • 63,842 miles
    • No accidents, 2 owners, personal use
    • 22 City / 29 Hwy MPG
    • MINI of Plano (7 mi away)
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Plano, TX / 7 miles away from Frisco, TX

    Sewell BMW MINI of Plano proudly offers this 2019 Audi A6 All Wheel Drive that has been professionally inspected by one of our Sewell technicians. Thi...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    25 Combined MPG (22 City/29 Highway)

    Listing Information:

    VIN: WAUL2AF29KN091813
    Stock: 5367017A
    Certified Pre-Owned: No
    Listed since: 08-24-2025

    • 53,871 miles
    • No accidents, 1 owner, rental vehicle
    • 24 City / 31 Hwy MPG
    • Bob Tomes Ford (8 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Mckinney, TX / 8 miles away from Frisco, TX

    Recent Arrival! CARFAX One-Owner. Clean CARFAX. 2023 Audi A6 4D Sedan 45 Premium quattro White quattro 2.0L 4-Cylinder TFSI 7-Speed Automatic Audi A6 ...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: No

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: Yes

    Features and Specs:

    27 Combined MPG (24 City/31 Highway)

    Listing Information:

    VIN: WAUD3BF23PN020735
    Stock: 3C31057
    Certified Pre-Owned: No
    Listed since: 09-12-2025

Showing 22 - 42 out of 206 listings

Consumer Reviews for the Audi A6

Read recent reviews for the Audi A6
Overall Consumer Rating
4.2 out of 5 stars39 Reviews
Write a vehicle reviewSee all 39 reviews
  • 5 star
    (64%)
  • 4 star
    (15%)
  • 3 star
    (3%)
  • 2 star
    (10%)
  • 1 star
    (8%)
5 out of 5 stars

2019 A6 is fun to drive: 1 year update

Mr. Mike, 04/14/2019
2019 Audi A6 3.0 TFSI Premium Plus quattro 4dr Sedan AWD (3.0L 6cyl Turbo gas/electric hybrid 7AM)
I wanted to update the review of my 2019 A6 premium plus with the 3.0L engine, sports suspension and adaptive cruise technology. The car remains the most fun to drive vehicle I’ve ever owned. The new MMI that appeared radical a year ago is now so familiar. I love the ability to toggle and change info on the screens. I couldn’t imagine going back to the old push knob that seems archaic … without a touch screen. Engine acceleration in sports mode is phenomenal. Maybe a bit of lag in automatic mode at low rev but not a big issue for me. Handling is superb and the cabin is very quiet, except for an annoying rattle from the rear sun shades that I would not order again. With snow conditions, the car handled beautifully even with streets that were not plowed well. FYI, my Pirelli P Zero tires performed well but only gave me 18K miles.
Report abuse

Used 2020 Audi A6 in Frisco, TX Values

Estimated values
2020 Audi A6 Premium Plus 4dr Sedan AWD w/45 TFSI (2.0L 4cyl Turbo gas/electric mild hybrid 7AM) with no options
ConditionTrade-InPrivate PartyDealer Retail
Outstanding$22,961$25,239$27,448
Clean$22,386$24,572$26,684
Average$21,428$23,460$25,412
Rough$20,182$22,015$23,759

The average list price of a used 2020 Audi A6 in Frisco, Texas is $29,092. The average mileage on a used Audi A6 2020 for sale in Frisco, Texas is 51,161. Based on the average mileage of 51,161 for used 2020 Audi A6 for sale in Frisco, TX and using an average vehicle condition rating, which means the vehicle may have a few mechanical and/or cosmetic problems and may require a considerable amount of reconditioning, we appraise the average trade-in value of a used Audi A6 2020 in Frisco, Texas to be $21,428.

Filters
Skip to Results

Applied Filters4Active

Select Buying Experience

Location

Search radius100 miles
Search radius

Make & Model

Year

New / Used

Price & Payments

Price Rating

Trim

Mileage

Accidents & History

Engine & Drivetrain

Exterior Color

Interior Color

Total Seating

Edmunds Review

Features

Options & Packages

MPG

Listing Details


* Delivery of any kind does not apply to Alaska and Hawaii. Contact the dealer for delivery details, restrictions and costs.