Coolant Water Pump and Thermostat -- Coolant temperature indicator gauge runs from normal to high after about 10-15 miles drive. Coolant levels are good and no signs of leak. Engine light is activated along with warning messages. Engine Warning: Drive System Malfunction. Please call for service. The vehicle goes into "Limp Mode" and warns to not exceed 4,000 rpm. I am in the process of having this repaired by a mechanic. FYI--- There was a previous RECALL for this in 2017. Clearly the problem still occurs.
The worst 2018 Audi A3 problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Airbags17
- Fuel system5
- Electrical4
- Engine4
- Transmission4
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Airbags17
- Fuel system5
- Electrical4
- Engine4
- Transmission4
- Tires3
- Seats2
- Driver assistance1
- Lights1
- Seat belts1
Recalls 2
Fuel system, gasoline
- What is wrong
- Volkswagen Group of America, Inc. (Volkswagen) is recalling certain front-wheel drive 2015-2020 Audi A3 Sedan, 2015-2019 Audi A3 Cabriolet, 2019-2020 Volkswagen Jetta GLI, 2018 Golf Sportwagen GP, 2018-2019 Golf Sportwagen A7, 2015-2017 Golf Sportwagen, 2015-2020 Golf GTI, and 2015-2020 Golf A7 vehicles. Due to a problem with a suction jet pump seal inside the fuel tank, fuel may flow into the evaporative emissions (EVAP) system and possibly leak out of the charcoal canister.
- Risk
- A fuel leak in the presence of an ignition source increases the risk of a fire.
- Remedy
- Dealers will replace the suction pump, free of charge. Final owner notification letters for Audi owners were mailed on July 25, 2024. Final owner letters for VW owners were mailed on August 13, 2024. Owners may contact Volkswagen customer service at 1‑800‑893‑5298 or Audi customer service at 1‑800‑253‑2834. Volkswagen's numbers for this recall are VW: 20UF/Audi: 20YF. Vehicles that were previously recalled under 16V‑647 will need to have the new remedy completed. This recall expands and replaces previous recall number 16V‑647.
Recall number 24V110000 · Recall details
Air bags: sensor: occupant classification: front passenger
- What is wrong
- Volkswagen Group of America, Inc. (Audi) is recalling certain 2015-2020 Audi S3 Sedan, A3 Sedan, 2016-2018 A3 Etron, 2017-2020 RS3 Sedan, and 2015-2019 A3 Cabriolet vehicles. The passenger occupant detection system (PODS) may malfunction and switch off the passenger air bag even when the seat is occupied.
- Risk
- A deactivated passenger air bag increases the risk of injury during a crash.
- Remedy
- Dealers will replace the PODS sensor mat and update the PODS control module, free of charge. Owners letters were mailed December 23, 2021. Owners may contact Audi customer service at 1‑800‑253‑2834. Audi's number for this recall is 69BY.
Recall number 21V198000 · Recall details
See all 2 recalls for the 2018 Audi A3
Defect investigations
Fuel Leak due to Suction Jet Pump Failure within Fuel Tank (Remedy Effectiveness of Recall 16V647)
On December 12, 2023, the Office of Defects Investigations (ODI) opened RQ23-007 to investigate the remedy repair effectiveness and scope of Volkswagen (VW) recall 16V‑647. Recall 16V‑647 was issued on September 2, 2016, for a defective suction jet pump (SJP) inside the fuel tank. Failure of the SJP could lead to a fuel leak from the vehicle. This recall covered certain model year (MY) 2015-2016 Volkswagen Golf and Audi A3 passenger car vehicles. The recall remedy repair replaced SJP Version 1.0 with an improved version, Version 1.1. The SJP is designed to purge fuel from the evaporative emissions (EVAP) system. VW’s recall filing stated the SJP may have been damaged during assembly, which could potentially allow fuel to flow directly into the EVAP system. Over time, the fuel could accumulate in, and cause a leak from, the charcoal canister filter element. ODI received consumer complaints of SJP failure leading to a fuel leak, refueling spit back, refueling shutoff, and/or fuel odor in vehicles previously repaired under recall 16V‑647. Additional complaints alleging SJP failure leading to the previously stated outcomes were received in vehicles outside the scope of recall 16V‑647, including MY 2016-2020 VW Golf and Audi A3 vehicles. VW issued recall 24V‑110 on February 14, 2024, to address issues with SJPs Versions 1.0 and 1.1. The recall remedy replaces the SJP Version 1.0 or 1.1 with an improved version, Version 2.0. Recall 24V‑110 covers certain MY 2015-2020 VW Golf (including Golf GTI), 2015-2020 Audi A3, and 2019-2020 VW Jetta GLI vehicles, including vehicle previously repaired under 16V‑647. Vehicle owners were notified of this recall in April 2024 and VW’s projected date for owner notification of recall remedy availability is August 2024. In view of the recall being conducted by VW, ODI is closing this Recall Query (RQ). The Agency reserves the right to take additional action if warranted by future circumstances. To review the ODI reports cited in the Closing Resume ODI Report Identification Number document, go to
RQ23007
Technical service bulletins for the 2018 Audi A3 650
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- Diagnosed and confirmed malfunction of the vehicle’s AEB system that resulted from failure or malfunction...
- This bulletin provides information when there are creaking/squeaking noises from the front end on uneven...
- This bulletin provides informaiton on the use of the PICO-NVH tool (VAS 611 015).
- This bulletin proides service information when there is a prompt to take over the steering wheel (hands...
- This bulletin provides information when the starter battery is discharged or malfunctioning.
- This bulletin procides information when there are leaks in the area of the front end/engine...
- This bulletin provides information to aid in diagnosing the vehicle locking system.
- This bulletin provides information when the engine is not runing smoothly; all gas engines.
- This bulletin provides information on VIN plates, Safety Certification labels, and ordering procedures.
- This bulletin provides infomraiton when the exterior lights have moisture accumulation.
2018 Audi A3 fuel economy
Official EPA estimates in miles per gallon (MPGe for electric). Ranges cover trims that share the same engine.
| Engine | Drive | City | Highway | Combined |
|---|---|---|---|---|
| 1.4L 4‑cyl Plug-in hybrid | FWD | 34 | 39 | 36 |
| 2.0L 4‑cyl | FWD | 26 | 35 | 29 |
| 2.0L 4‑cyl | AWD | 22-24 | 30-31 | 25-27 |
What 2018 Audi A3 owners say
Most recent owner complaints, unedited.
225/45-R18 DOT(17/22) On September 6, 2025, I purchased a 2018 Audi A3 (VIN [VIN], 56,634 miles) delivered by Carvana. Within days, I had the vehicle inspected at multiple independent repair shops. Each shop documented that all four tires showed dry rot and cracking and advised immediate replacement due to risk of tire failure. On September 10, 2025, I contacted Carvana and followed their warranty claim process. After escalation, on September 18, 2025, I was informed that Carvana determined “the tires are not bad enough” and denied replacement. The vehicle was delivered with unsafe tires that pose a serious risk of blowout or loss of vehicle control, endangering both the driver and others on the road. DOT date codes and photos of the cracks confirm the condition of the tires at the time of delivery. This complaint is being filed so the federal safety agency is aware of the issue and to request investigation into Carvana’s sale of vehicles with dry-rotted, unsafe tires.
Hello, I dropped my car off at Audi and Dominion in San Antonio Texas on Thursday July 10th for a repair this was a recall for the fuel pump system in something in the mechatronic controls. They had my car until Saturday I was informed that the repairs were done under warranty. Then on Saturday July 19th as I began to drive the vehicle a alert for my transmission malfunction appeared on my dashboard and I Lost first gear. I had my car taken to Audi on Dominion where I was informed by several service staff that this is a common malfunction after the last software update that was done the week prior and that it could take up to 48 hours to do the repair and recall warranty work on my vehicle. Audi on Dominion has had my vehicle for 5 days and has not given me an answer as to know whether or not the repairs will be approved as this is covered under my extended warranty. My car was working perfectly fine until I was forced to take it in for this recall of which Audi has failed to provide a loaner vehicle or give accurate information as to whether or not the repairs will be covered. I have been informed that I will be responsible for the cost of the repairs. These repairs are only brought upon due to Audis forcing me to bring the car in for the recall repair as it would have voided out the rest of my vehicles warranty. As of today I am still without a vehicle and without an answer from Audi. I have tried reaching out to Audi of America without any response.
Audi had a recall on my 2018 A3 for a Passenger Occupant Detection System. in July 2023, Audi replaced the PODS Sensor mat. Recently, the same car has encountered the same issue. The PODS light indicates the airbag is off even if a passenger is sitting in the seat. There has been not repair work since July 2023, that would impact the PODS. And the warning lights reappeared after a period of normalcy. I feel this is an incomplete recall remedy and Audi is now wanting to charge me for the repair
My 2018 Audi A3 began having fuel-related issues after receiving the recall service for campaign 20YF (Suction Jet Pump Seal) at an authorized Audi dealership. I first took the vehicle to an independent mechanic, because the check engine light came on, and there was a strong fuel smell. Most concerning, fuel leaked heavily from the front part of the engine, posing an extreme fire risk. who performed a diagnostic and found the following faults: Cold start fuel pressure performance fault Fuel rail/system pressure too low Fuel rail pump control valve stuck open Injector 4 leaking fuel The mechanic replaced injector 4 and installed new seals. However, the fuel leak continued, so I decided to take the car back to the Audi dealership, since they had previously performed recall work on the vehicle. I was concerned that the fuel leak might be related to the recall. The dealership told me the issue was not related to the recall and required a new in-depth diagnostic, which I would have to pay for. I accepted, and they charged me $876 for a deeper inspection. After their diagnosis, they said the only issue was that the previous mechanic had installed the seals incorrectly. They replaced the seals again and charged me for the repair. When I picked up the vehicle, the check engine light was still on. I immediately reported it to the dealership, and they asked me to return the car, saying the light should not be on. Once I brought it back, they told me it was now a new issue unrelated to their work, and that I would need to pay for another diagnostic. I believe this ongoing problem is directly related to the fuel system recall or to the dealership’s repair, and I feel that I am being charged repeatedly for an issue that was never fully resolved. Despite my efforts to follow Audi’s process, I am being held financially responsible for what I believe is a safety-related failure that began after the recall was performed.
I was driving on the freeway at 60 mph when I received a warning code of a transmission problem. The code said the car was driveable but I should take it in for service. About 1-2 minutes after that the car lost all power. Unfortunately I broke down in the left lane in a construction zone without a shoulder. The state patrol had to temporarily shut down all three lanes of the highway to push me out of the traffic lane I was blocking. That was unsafe for me and for the state patrol and for the tow truck driver. The car was up to date on all recommended service, had been acting normally until the moment it failed, had not given me any warnings and is only 6 years old. I had the car towed to the dealer and the dealer reported that the Mechatronic unit (transmission computer) failed. Replacing the Mechatronic took a week and cost $5000.
Will be driving down the road and warning light comes on and car forces me to switch over to manual transmission in order to drive it. If I turn the vehicle off for a minute it will let me reset it to automatic, but then will switch back over to manual. Just wondering if the fuel leak pump that has been recalled is causing this problem.
The vehicle pre-sense stopped the vehicle due to the detection of an object however, there was no object. This happened going forward and in reverse multiple times, causing the car to come to a sudden, abrupt stop even at speeds in excess of 30mph. This resulting in my teen daughter having bruising from the seat belt. The car was taken to the dealership and the dealership recalibrated the control unit. The vehicle continues to unnecessarily activate pre-sense when in reverse, and causes the car to come to an abrupt halt despite there being no object. The system may be responding to shadows. Numerous returns to the service department continue to yield “no codes”. The PODS system was recalled and this is a related system.
About once per month my car will rev when the accelerator is pushed but the car will not proceed. On MULTIPLE occasions this has put the SAFETY of myself and other road users at SIGNIFICANT RISK. This is because I'll be attempting to pull into traffic and the car will FAIL TO PROCEED. This is a known issue documented by Audi in TSB # [XXX] [XXX] ). I've described the issue before to my dealership but only found out about the fix myself via researching on the federal safety agency's site. Further, this should CLEARLY BE A RECALL - the vehicle does not move when it is needed. Audi should not be charging customers for this update and it should be applied to ALL effected vehicles. Happy to provide any additional information needed. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
My Audi a3 got the recall for PODS done 5/2022 which the sensors and air bag in the passenger side weren’t working and I got the same lights come up 2 weeks ago. My Dealership says since this was a recalled item and is a massive safety concern and should be covered by AUDI USA. Instead they want to charge me $1400. I have 3 kids and one sits in the front, and need my car to take them to school and so forth so big safety feature I need. This is a huge safety issue and Audi needs to take accountability
Compare the 2018 Audi A3
Other model years
2001200320042006200720082009201020112012201320152016201720182019202020222023202420252026
Questions about the 2018 Audi A3
Is the 2018 Audi A3 reliable?
Owners have filed 33 complaints about the 2018 Audi A3, fewer than a typical A3 model year.
What is the 2018 Audi A3 year score?
The 2018 Audi A3 scores 76 out of 100 (average). The score compares it with the other model years of the Audi A3: 75 is a typical year, 50 means twice the usual complaints, and serious complaints and recalls lower it.
What is the most common problem with the 2018 Audi A3?
Airbags, with 17 complaints. Next is fuel system (5).
How many recalls does the 2018 Audi A3 have?
2 recalls, covering fuel system, gasoline and air bags.
What gas mileage does the 2018 Audi A3 get?
Official estimates for the 2018 Audi A3 range from 25 to 36 mpg combined. The most efficient version (1.4L 4-cyl plug-in hybrid, FWD) gets 34 city and 39 highway.
VIN decoder
See the problems and recalls for an exact car
Buying a used 2018 Audi A3?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history