2018 Audi S4 Safety Report
2018 Audi S4 shows low complaint volume but notable engine and airbag recall concerns.
AI Safety Analysis for the 2018 Audi S4
Reliability Score
The 2018 Audi S4 receives a reliability score of 65 out of 100 based on analysis of NHTSA complaint data, recall history, crash reports, and safety ratings. This indicates average reliability — some notable concerns exist that prospective buyers should be aware of.
Known Issues for the 2018 Audi S4
The following issues have been identified from NHTSA complaint data and owner reports for the 2018 Audi S4:
| Issue | Severity | Frequency | Typical Mileage |
|---|---|---|---|
| Catastrophic Engine Failure (Ea839 Engine) Internal engine parts (rocker arms needle bearings) become loose, causing knocking and metal shavings that destroy the engine. Also includes water pump defects leading to damage to vacuum lines and thermostat. |
High | Occasional | unknown miles |
| Erroneous Pre-Sense Auto-Braking Vehicle's pre-sense auto-braking activates erroneously and aggressively, almost causing accidents at speed. System cannot be permanently disabled. |
High | Rare | unknown miles |
| Broken Rear Suspension Spring Rear spring is broken and mounts are deteriorating, potentially leading to an accident if not repaired. Research indicates this is common with certain Audi vehicles. |
Medium | Rare | unknown miles |
| Pcv Housing And Lines Failure PCV housing and lines failed, causing pressure to build up, shooting off the oil cap and creating a fire hazard near the turbo. |
Medium | Rare | unknown miles |
| Passenger Airbag Deactivation Recalls indicate a defect where the passenger air bag may be disabled, increasing the risk of injury in a crash. |
High | Common | all miles |
Common Problems Reported by Owners
Based on NHTSA complaint data, the following components account for the majority of reported issues with the 2018 Audi S4:
Multiple complaints regarding engine issues, including water pump defects, PCV system failure, and catastrophic internal engine component failure.
Two recalls issued for passenger airbag deactivation, increasing injury risk in a crash.
One complaint about erroneous activation of the pre-sense auto-braking system.
One complaint regarding a broken rear spring and deteriorating mounts.
One complaint about loose underride guard panels collecting water/snow.
One complaint about a 1-2 second delay in deceleration when transitioning from on-throttle to off-throttle in manual mode.
Frequently Asked Questions About the 2018 Audi S4
Is the 2018 Audi S4 safe?
Based on NHTSA data, the 2018 Audi S4 has a low number of reported complaints (7 total) and a 5-star rollover rating. However, comprehensive frontal and side crash test ratings are unavailable. There are two significant recalls concerning passenger airbag deactivation, which is a critical safety concern if not addressed. Engine issues, including catastrophic failures, are also noted in complaints.
What are common problems for the 2018 Audi S4?
The most reported issues for the 2018 Audi S4 are related to the ENGINE, accounting for 43% of complaints, including water pump defects and catastrophic engine failure. There are also two recalls for AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE, indicating a common safety defect. Other reported problems include erroneous pre-sense auto-braking and broken rear suspension springs.
Are there any recalls for the 2018 Audi S4?
Yes, there are two recalls for the 2018 Audi S4, both related to the passenger airbag system. These recalls, identified as 'SEATS' and 'AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE', address a defect where a disabled passenger airbag increases the risk of injury in a crash. Owners should ensure these recalls have been completed.
How does the 2018 Audi S4 perform in crash tests?
NHTSA provides a 5-star rollover rating for the 2018 Audi S4. However, specific frontal and side crash test ratings are not available from NHTSA, making a full assessment of its crashworthiness difficult based solely on this data.
What should I look out for when buying a used 2018 Audi S4?
When considering a used 2018 Audi S4, prioritize verifying that both passenger airbag recalls have been completed. Be vigilant for signs of engine issues, such as unusual noises or coolant loss, given the reported water pump defects and catastrophic engine failures. Also, check for any suspension issues like broken springs and test the pre-sense braking system for erratic behavior.
Buyer Advice
Our recommendation: Given the low complaint volume but critical engine issues and airbag recalls, ensure all recalls are addressed and have a thorough pre-purchase inspection focusing on the engine and suspension before buying a 2018 Audi S4.
NHTSA Data Summary for 2018 Audi S4
This safety report is based on a comprehensive analysis of data from the National Highway Traffic Safety Administration (NHTSA) for the 2018 Audi S4. The data includes 7 consumer complaints filed by vehicle owners, 2 manufacturer-initiated safety recalls, and safety rating assessments associated with this vehicle.
All data presented in this report is sourced from public NHTSA databases. Our AI analysis identifies patterns across complaint narratives, correlates them with recall history, and produces the safety assessment above. This analysis is updated as new complaints and recalls are filed with the NHTSA.
Consumers are encouraged to report vehicle safety problems to the NHTSA at nhtsa.gov. If your vehicle is subject to a recall, contact your dealer to schedule the free repair.