Showing the 2023 A4 S Line Prestige. We haven't verified this trim's engine; the numbers below cover every version of this model year. Every version
Owner complaints, recalls, fuel economy and safety ratings from public NHTSA and EPA data, updated Oct 18, 2026.
Fuel economy
26–28 mpgcombined; city 23–24, highway 30–33; every version of this model year
Five years of fuel
$14,370–$15,480U.S. average; Ohio $13,540–$14,580 at local prices; every version of this model year; fuel only, not other costs of owning it; 15,000 miles a year, at EIA fuel prices for the week of Oct 12, 2026
NHTSA overall safety rating
Not ratedNHTSA has no overall rating for this year
NHTSA's VIN data lists these trims for the 2023 A4. A trim's engine and numbers are shown as its own only where EPA names versions after the trim and no other version could be it; "seen with" means a source shows that engine on the trim, not that it was the only one. Recalls and complaints cover the whole model year: whether a recall applies to a car depends on its VIN, on NHTSA's recall lookup.
Owners have filed 11 complaints with NHTSA about the 2023 A4. These are unverified owner reports, counted by the part of the car they name; one complaint can name several parts. Counts aren't adjusted for how many were sold, so they don't show how reliable a car is.
Complaints by part of the car
Part
Complaints
Crashes
Fires
Injuries
Electrical system
3
0
0
0
Engine
3
0
0
0
Forward collision avoidance
2
1
0
1
Vehicle speed control
2
0
0
0
Air bags
1
0
0
0
Back over prevention
1
0
0
0
Equipment
1
0
0
0
Lane departure
1
1
0
1
Service brakes, hydraulic
1
0
0
0
Tires
1
0
0
0
Unknown or other
1
0
0
0
Wheels
1
0
0
0
What the columns count
Complaints: complaints that name that part. One complaint can name several parts, so the rows overlap and don't add up to the total.
Crashes and Fires: complaints that report one. Two owners can file about the same event, and NHTSA doesn't link them, so these count reports, not events.
Injuries: the number of people the complaints say were injured.
None of these columns shows that a part caused a crash, fire or injury: they're what owners reported, unverified.
Complaints by model year
Newer years have had less time to collect complaints, and counts aren't adjusted for sales, so a shorter bar doesn't mean a more reliable year.
NHTSA lists 1 recall campaign for the 2023 A4 over its history. Campaigns are matched by model and year, so each one may apply to a given car, and its repair may already be done: check a VIN on NHTSA's recall lookup for the open recalls on that exact car.
Air bags: sensor
NHTSA campaign 24V251000 · reported Apr 3, 2024 · 91 vehicles potentially affected across the whole campaign
Remedy: Dealers will replace the passenger seat occupant detection system control module, free of charge. Owner notification letters were mailed on May 8, 2024. Owners may contact Audi customer service at 1-800-253-2834. Volkswagen's number for this recall is 69GU.
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2023 Audi S5 Cabriolet, A4 Allroad, Q5 Sportback, A3 Sedan, S5 Sportback, SQ7, TT Coupe, TT Roadster, RS5 Sportback, 2024 A8, E-Tron Quattro, E-Tron Sportback Quattro, Q8, RSQ8, 2023-2024 Q3, Q5, and Q7 vehicles. An electrical connection in the front passenger seat for the occupant detection system (ODS) control module may loosen and deactivate the front passenger air bag.
Risk: A deactivated front passenger air bag will not deploy during a crash, increasing the risk of injury.
Carmakers sent NHTSA 876 service bulletins and notices that cover the 2023 A4, the latest on Sep 25, 2026. They tell dealers how to fix known issues.
The parts they mention most: electrical system (284), unknown or other (137), equipment (121), structure (91), engine (49).
NHTSA hasn't opened a defect investigation that covers this model year.
Maintenance
Oil
The owner's manual gives the oil and how often to change it. We show oil facts only once we've checked them against the manual, and we haven't yet for the 2023 A4.
EPA class: compact cars. EPA greenhouse gas score: 5–6 out of 10. Each version EPA tested:
Swipe the table sideways for more columns.
Version
Engine
Transmission
Fuel
City / hwy / comb
A4 allroad quattro All-Wheel Drive
2.0 L, 4 cyl, turbo
Automatic (AM-S7)
Premium Gasoline
23 / 30 / 26
A4 quattro All-Wheel Drive
2.0 L, 4 cyl, turbo
Automatic (AM-S7)
Premium Gasoline
24 / 33 / 28
A4 S-Line quattro All-Wheel Drive
2.0 L, 4 cyl, turbo
Automatic (AM-S7)
Premium Gasoline
24 / 32 / 27
Sources and dates
U.S. EPA fuel economy data, file of Sep 29, 2026
NHTSA owner complaints, file of Oct 18, 2026
NHTSA recalls, file of Oct 18, 2026
NHTSA manufacturer communications, file of Oct 18, 2026
NHTSA defect investigations, file of Oct 18, 2026
NHTSA 5-Star Safety Ratings, file of Aug 7, 2026
U.S. Energy Information Administration, file of Oct 12, 2026
Fuel cost: EPA mpg with fuel prices for the week of Oct 12, 2026 and electricity prices for Jul 2026. Source: U.S. Energy Information Administration (Oct 2026). Complaints are unverified reports owners filed with NHTSA. About the data