YearToAvoid

2018 Audi S6 Problems, Recalls & Reliability

Verdict

No verdict

Complaint Index

46/100

#8 most-complained of 14 S6 years

Based on NHTSA complaints per model-year, not a reliability rating. Methodology

The 2018 Audi S6 has a complaint index of 46, ranking 8th out of 14 model years, with 4 complaints, 1 recall, and no crashes, fires, or injuries reported to NHTSA. It sits in the middle of the pack rather than among the worst years.

Complaints
4
Recalls
1
Crashes / fires
0 / 0
Injuries / deaths
0 / 0
NHTSA overall rating
5 / 5 ★
EPA combined MPG
18
16 city / 24 hwy

Top 2018 Audi S6 problems

NHTSA owner complaints by component group. Groups with 15+ complaints have their own page.

  1. Steering2 (50%)
  2. Brakes1 (25%)
  3. Electrical System1 (25%)
  4. Visibility & Wipers1 (25%)

What owners report

  • A dead battery at low mileage triggered steering system, dynamic stability, adaptive suspension, and adaptive light fault warnings.
  • The steering fault appeared shortly after purchase, with the median mileage at failure for steering complaints at 420 miles.
  • One owner reported the windshield shattering three times from minor road debris impacts, with the most recent incident at 21,000 miles while driving at highway speed.
  • Steering issues account for half of all reported problem areas for this model year, followed by brakes, electrical system, and visibility/wipers each at one complaint.
2018 Audi S6 complaints: complaints filed per month2Dec 2017Apr 2018Apr 2021Dec 2023
5 complaints filed with NHTSA from Dec 2017 to Dec 2023; peak Dec 2023 (2).

2018 Audi S6 recalls

1 NHTSA recall campaign list this model year.

  1. NHTSA 18V370000Jun 4, 2018Airbags139,249 vehicles

    Air bags:sensor:occupant classification

    Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2013-2018 Audi S6 and S7, 2012-2018 A7 and A6 Sedan, and 2014-2018 RS7 vehicles equipped with basic seats (with or without heating). Stress or wear of the body-sensing mat within the front passenger seat may cause the Passenger Occupant Detection System (PODS) control module to malfunction.

    Risk: If the PODS module malfunctions, the front passenger air bag may not deploy properly in the event of a crash, increasing the risk of injury.

    Remedy: Volkswagen will notify owners, and dealers will install a PODS system repair kit, free of charge. The recall began November 29, 2018. Owners may contact Audi customer service at 1-800-253-2834. Volkswagen's number for this recall is 74D5.

2018 Audi S6 fuel economy and fuel cost

City
16 MPG
Highway
24 MPG
Combined
18 MPG
Annual fuel cost (EPA)
$4,450
15,000 mi/yr
Fuel
Premium
Current regular gas
$4.32/gal
national avg.

EPA figures; median across configurations of this model year. Estimate your own cost with the fuel cost calculator.

2018 compared with other S6 years

Complaint Index by model year (0 = fewest issues, 100 = most)0255075100’10’11’13’14’15’16’17’18’20’21’22’23’24’25
Complaint Index: 0 = fewest issues, 100 = most, relative to other years of this model. Avoid Caution Good Best
YearVerdictIndexComplaintsRecallsMPG
2016Avoid8519221
2017Caution545221
2018No verdict464118
2020No verdict382622
2021No verdict801022

All Audi S6 years: best and worst →

Frequently asked questions

Is the 2018 Audi S6 reliable?
NHTSA lists 4 complaints for the 2018 Audi S6, giving it a complaint index of 46, which ranks 8th out of 14 model years. It reports no crashes, fires, injuries, or deaths.
What is the top problem area for the 2018 Audi S6?
Steering is the top problem area, making up 50% of reported complaints, with a median mileage at failure of 420 miles.
Does the 2018 Audi S6 have any recalls?
Yes, one recall (campaign 18V370000) covers airbag seat stress or wear issues on basic seats. Dealers install a PODS system repair kit free of charge.
How does the 2018 Audi S6 compare to other S6 years?
With a complaint index of 46, the 2018 model ranks better than years like 2013 (index 100, Avoid) and 2016 (index 85, Avoid), but worse than 2021 (index 8) and 2023 (index 15).

Sources: NHTSA Office of Defects Investigation complaint and recall databases; U.S. EPA fuel economy data; NHTSA 5-Star Safety Ratings. Complaints are unverified owner reports.

Data updated Sep 24, 2026. Read the methodology and data sources. The Complaint Index is based on NHTSA owner complaints and recalls; it is not a reliability rating.