AUDI S4 COMMON PROBLEMS!

IS THE AUDI S4 RELIABLE? YES OR NO? WATCH TO FIND OUT!

In this video, we'll be discussing some of the common problems with the Audi S4. From issues with the car's engine, to problems with the transmission, to problems with the brakes, we'll discuss everything that's likely to go wrong with this popular car.

If you're thinking about buying an Audi S4, then it's important to be aware of the common problems that this car is known for. By watching this video, you'll be able to avoid some of the major headaches that often come with Audi S4 ownership.

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[stefanbrava]

Hi everyone, I've had my 2017 B9 S4 for over 2 years now, got the car around 40k, now it's shy of 60k, I had serviced it every 6 months/8k miles max for oil and filter (with the dealer to keep the full history) and the rest as per the normal routine or DIY for filters and small repairs, I did not experience any of the issues mentioned on the video here, rockers are fine no ticking noise yet, WaterP coils, no oil or coolant leaks no turbo noise, etc, but I have replaced 2 lower suspension mounts for £40 in total parts and labour, a heated mirror (normal stuff) and besides brakes, tires, and consumables which I also repalaced all of them, the biggest problem that I had but it was a cheap fix for me (I think is a common issue on all post-2016 Audi's not only the S4's) I did get a random message one day about the braking system and the ABS not functioning as intended on a white text no error light or codes but the brakes felt wierd, I parked the vehicle imediatelly and went to do my reasearch, found that loads of people had the same issue with the brake boost pressure sensor (got 3 revisions now especially bad on the first revision pre 2018 cars, like mine), which I replaced myself fixing the issue completely for about £90 for the part alone and about 15 minutes of my time (about 1 year in my ownership with no further issues with that system), I do personally expect the rest of the issues to pop eventually as nothing last forever but so far so good, I did not experience high oil consumption I only used 1 l of oil since I bought the car 2.5 years ago, I noticed that I used 200-300 ml alone on a trip in Germany (4k miles round trip) but that trip was in the summer and also at constant high speeds (over 120 miles on average), I usually give the vehicle a good run per week, and go traveling in Europe in the mountains, the car is driven as it is supposed to be driven with no excuses, on my stock car the top speed on the german autobahn was 162mph (262 kph) and it could have gone quicker still as it was still pulling at that speed :)

[hardykornfeld]

Here’s my N=1 experience. I owned a B8 S4 that suffered water pump failure, required extra oil between changes, and began to experience DSG failure. Before the tranny crapped out, I traded it in for a 2018 B9. That car has gone 62, 000 miles without a single mechanical issue. Also, it is not burning off oil between changes but I still carry an extra quart in the car baes on my B8 experience. Amazingly for an Audi, this has been the most reliable new car I have owned.

[DidiPort]

I had a 2019 S4, from new until 39, 000km, no problems at all.
I did drive spiritedly from time to time, this vehicle is a Wolf in Sheep’s Clothing. It is very planted and sits well in the road.
I did a driving Holiday (in Queensland Australia) 5, 500km in 10 days, winding hilly (fun) stuff to Long Highway Stretches, i did not get caught behind any Grey Nomads (some times they were 7 to 8 in a row) thank God people still flash you for Police. On the whole trip 7.3 litres per 100 kilometres, and on the highway (still passing Grey Nomads) 6.7 litres per 100 kilometres.
I did have to do an Oil Top Up 1 litre added. I drive in Comfort and simply use the shifter to go into Sport to Pass if extra power was needed. All systems go and thoroughly enjoyed the “Planted Feel” and trip. Brakes were fine, however I did the research on new Rotors and Ceramic Pads, very similar cost to OEM how much better wear so cheaper if you held the vehicle for a long period of time.
I now live O/S, would buy another new one except they want to sell me a Diesel, no thanks.

Daytona Grey, Black Optics Pack, Carbon Pack, and basically Fully Optioned. I did change the badges to black and added larger Paddle Shifters, with very minimal changes it looked smick.

[DC-obgx]

I have a 2018 b9 s4 prem plus for 38k miles, stock, for almost 6 years now. Planning to get rid of it soon, but it has been problem free, oil changed DIY every 5k. Best daily I've had.

[Coveted.]

My dad said he’d go 50/50 on a car with me no matter what. He bought an a4 but during the test week deal he made he found out it was a lemon, decided to get an s4 prestige. Ever since he said that, and bought that car. I’ve been saving up. I’m probably 2 months away from my own s4. I told him how much I saved he couldn’t believe it. I love this car so far. Went out one night and stole my dads car. Gotta have it.

[larrypontelandolfo]

I own a 2022 S4 and so far I love this car... Great review, thanks

[MJLU]

Engine mounts, coolant tank, coolant pipes, tstat are the main issues with Audi’s. Replaced all of these in my ‘14 S4. PCV breather hose too.

[AnewMadrid]

I have a 2018 S5, bought two years old. Has 39k miles, had to change the engine mounts, upper control arm bushings and coolant module. Mynwife drives it now. No tune but have KWHas and 034 motorsport, upper tie bar and HR reaer sway bar. She likes it, frankly I.never did really csr for the turbo lag

[tunatuna]

I had a 2018 bought new that I put 25k on and had zero problems. currently have a 2020 that Ive put 42k on over the past 3 years. had the bluetooth module crap out, replaced under warranty. It has developed a little bit of vibration at lower speeds at full lock i.e. parking. Plugged the exhaust valves because they were rattling. HPFP is loud but you get used to it. But other than that, it's a fantastic car. No faults or other failures. it will ingest debris into the airbox and block up the prefilter, so I clean that out every car wash.

[akj]

Had 2 issues with mines in the past 6 months of ownership
1) Fuel cap not opening - Fixed under warranty
2)AC not blowing cold - Waiting to be fixed under warranty.

[bloody_tea]

Mine is a 2019 b9pa version, now I’ve had it over 3.5 years and 80kkm. Only replaced a water pump during guarantee period, nothing else.

[laceycarter]

I have a stage 2 94k milage 2018 B9 S4 (2017 to very early 2019) rocker arms are going to fail, the motor seals were all flat, the oil cooler was leaking oil, you want to ch age the water pump, PCV, Water pump, thermostat.. it’s a great car but you have to keep up with things you can’t see. The hubs on theres cars also take a beating.

[chrisellison]

Thanks for this. Im looking at buying one myself as I've found a couple of lovely examples. Everything has teething problems, im.halpy to take a chance on these small things. Great video.

[breyton]

Have a 2010 B8 S4 in the U.S. Here is a list of the issues i have had beyond normal wear and tear (brakes/tires)

1: Recall on the water pump and thermostat were covered under warranty
2: Left rear shock failed - got a suspension failure error in the dash at 27K miles - Fixed under warranty
3: Mechatronics failure at 25K miles. Fixed under warranty
4: Rear center brake light failure
5: Front upper control arms replaced both sides - bushings worn and cracked.. at 80K miles
6: The thermostat failed at 100K miles. This resulted in replacing the thermostat, water pump and performing the carbon clean out on the valves since the the top of the engine needed to be opened up. That was a $4K bill.. ouch...

All in all, the reliability of the car is very good. I knew that around 100K miles, some big-cost repairs may start to show up. I also had a smaller supercharger pulley installed at 40K miles and really really love what it turned the car into. I do not drive my car hard and keep it in good shape with 5k oil changes. Think I like it more than the 98' M3 i owned, though I miss the manual transmission in the audi.

[tonybailey]

Have most of these issues been ironed out with the B9.5 version? The B10 looks drop dead gorgeous but I'm scared to death of more issues with the added complexity of the mild hybrid system from a reliability standpoint

[samartz]

If its little issues, happy to put up with it!

[nicholaslewis]

Make sure I’d you have to do the thermostat you make the dealer check for warranty coverage on it. Audi lost class action lawsuit on that model of thermostat so they extended warranty coverage. Had mine done couple weeks ago on 2018 and didn’t pay a dime

[Big_Sizzle_]

I have a 2019 s4 and the steering just locked up. Maintenance done, new battery, only at 54k miles. Researching it looks like I will have to replace the dynamic steering rack

[ShebanFPV]

B9 S4 MY2019, 32k km, stage 2, only issue so far is a sweaty PCV

[andrewkim]

Very informative, debating on selling the Supra for one of these or an F80