9.7

really awful
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
650 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2018 Audi S4 engine problems

engine problem

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2018 Audi S4 Owner Comments

problem #2

Apr 062024

S4

  • miles

A D V E R T I S E M E N T S

PCV housing and lines failed. Caused pressure to build up thus shooting off the oil cap shooting oil everywhere! in addition to that it is a huge fire hazard considering the turbo is right next to it.

- Noblesville, IN, USA

problem #1

Nov 142017

S4

  • 1,300 miles
When driving in manual mode and transition from on the throttle to off-throttle, there is a 1-2 second delay before the engine stops accelerating and transitions to deceleration. Especially in first gear, this means that the vehicle continues to accelerate for that period of time. I drove another model of Audi with the same engine/transmission (2018 S5) and it exhibits the same behavior. Since the car does not have a physical throttle cable, this would seem to be caused by the throttle not closing as commanded by the ECU or there being a delay in the throttle being commanded to close. This has not caused a collision but easily could.

- Cedar Park, TX, USA

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