Showing the 2018 A5 S Line Premium Plus. 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 17, 2026.
Fuel economy
27 mpgcombined; city 24, highway 33–34; every version of this model year
Five years of fuel
$14,910U.S. average; Ohio $14,050 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's VIN data lists these trims for the 2018 A5. 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 38 complaints with NHTSA about the 2018 A5. 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
Engine
8
0
0
0
Unknown or other
8
1
0
1
Electrical system
4
0
0
0
Service brakes
4
0
0
0
Structure
4
0
0
1
Air bags
3
0
0
0
Power train
3
0
0
0
Visibility/wiper
3
0
0
0
Steering
2
0
0
0
Suspension
2
0
0
0
Engine and engine cooling
1
0
0
0
Exterior lighting
1
1
0
0
5 more parts
Forward collision avoidance
1
0
0
0
Fuel/propulsion system
1
0
0
0
Seat belts
1
0
0
0
Visibility
1
0
0
1
Wheels
1
0
0
0
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 6 recall campaigns for the 2018 A5 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.
Volkswagen Group of America, Inc. (Audi) is recalling certain 2017-2020 A4 Allroad, A4 Sedan, 2018-2019 RS5 Coupe, 2019 RS5 Sportback, 2018-2020 A5 Cabriolet, A5 Coupe, A5 Sportback, S4 Sedan, S5 Cabriolet, S5 Coupe, and Audi S5 Sportback vehicles. The cable connecting the seat heater to the Passenger Occupant Detection System (PODS) may have a contact fault, causing the software to misdiagnose a malfunction and disable the passenger air bag.
Risk: A disabled passenger air bag increases the risk of injury in the event of a crash.
Remedy: Dealers will replace the connecting cable and either the heating mat or entire seat cover, free of charge. Owner notification letters were mailed January 7, 2022. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 74E3. This recall is an expansion of Recall 19V-547 (74D9). Vehicles previously repaired under 19V-547 will need to return for the new remedy.
Volkswagen Group of America, Inc. (Audi) is recalling certain 2018-2019 Audi RS5 Sportback, 2018 S5 Cabriolet, S5 Sportback, S5 Coupe, S4 Sedan, A5 Cabriolet, A5 Sportback, A5 Coupe, and 2017-2018 A4 Sedan and A4 Allroad vehicles. Oxidation on the Passenger Occupant Detection System (PODS) connecting cable may cause the software to misdiagnose a malfunction and disable the passenger air bag.
Risk: A disabled passenger air bag increases the risk of injury in the event of a crash.
Remedy: Audi will notify owners, and dealers will install cable ties to the harness, free of charge. The recall began September 9, 2019. Owners may contact Volkswagen customer service at 1-800-893-5298. Audi's number for this recall is 74D9.
Volkswagen Group of North America (Volkswagen) is recalling certain 2018 Audi A5 Sportback vehicles. The front suspension fasteners may not have been sufficiently tightened during vehicle production, possibly resulting in a front wheel becoming loose.
Risk: A loose front wheel may increasing the risk of a crash.
Remedy: Volkswagen has notified owners, and dealers will inspect the front suspension fasteners, and replace them as necessary, free of charge. The recall began January 23, 2019. Owners may contact Audi customer service at 1-800-253-2834. Volkswagen's number for this recall is 40O2.
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2018 Audi A5 Sportback and 2017-2018 Audi A4 Allroad vehicles. A passenger air bag module mounting screw may not have been sufficiently tightened, possibly affecting the deployment of the air bag in the event of a crash.
Risk: If the air bag does not deploy correctly in the event of a crash, it can increase the risk of an injury.
Remedy: Volkswagen will notify owners, and dealers will inspect the air bag mounting screw, tightening or replacing it as necessary, free of charge. The recall began December 19, 2018. Owners may contact Audi customer service at 1-800-253-2834. Volkswagen's number for this recall is 69Y4.
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2018 Audi A5 Coupe vehicles. The affected vehicles were built with head curtain air bag assemblies that may not unfold properly. As such, these vehicle fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 226, "Ejection Mitigation."
Risk: In the event of a crash necessitating deployment of the head curtain air bag, if the air bag does not deploy properly, the vehicle occupants have an increased risk of injury.
Remedy: Audi will notify owners, and dealers will modify the head curtain air bags so that they deploy properly, free of charge. The recall began on January 18, 2018. Owners may contact Audi customer service at 11-800-253-2834. Volkswagen's number for this recall is 69T7.
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2017-2018 Audi A4 Sedan and A4 allroad, and 2018 A5 Sportback vehicles. The aluminum trim on the front and rear doors can come loose from around the door speakers, leaving sharp edges exposed.
Risk: The sharp edges of the speaker trim increase the risk of injury to vehicle occupants.
Remedy: Audi will notify owners, and dealers will replace the speaker cover aluminum trim, free of charge. The recall began March 13, 2018. Owners may contact Audi customer service at 1-800-253-2834. Volkswagen's number for this recall is 70G6.
Carmakers sent NHTSA 1,101 service bulletins and notices that cover the 2018 A5, the latest on Sep 25, 2026. They tell dealers how to fix known issues.
The parts they mention most: equipment (352), electrical system (296), structure (101), unknown or other (87), power train (59).
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 2018 A5.
EPA class: subcompact cars. EPA greenhouse gas score: 6 out of 10. Each version EPA tested:
Swipe the table sideways for more columns.
Version
Engine
Transmission
Fuel
City / hwy / comb
A5 Cabriolet quattro All-Wheel Drive
2.0 L, 4 cyl, turbo
Automatic (AM-S7)
Premium Gasoline
24 / 34 / 27
A5 quattro All-Wheel Drive
2.0 L, 4 cyl, turbo
Manual 6-spd
Premium Gasoline
24 / 33 / 27
A5 quattro All-Wheel Drive
2.0 L, 4 cyl, turbo
Automatic (AM-S7)
Premium Gasoline
24 / 34 / 27
A5 Sportback quattro All-Wheel Drive
2.0 L, 4 cyl, turbo
Automatic (AM-S7)
Premium Gasoline
24 / 34 / 27
Sources and dates
U.S. EPA fuel economy data, file of Sep 29, 2026
NHTSA owner complaints, file of Oct 17, 2026
NHTSA recalls, file of Oct 17, 2026
NHTSA manufacturer communications, file of Oct 17, 2026
NHTSA defect investigations, file of Oct 17, 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