2018 Audi S4
WAUB4AF47JA225389
Vehicle record for the 2018 Audi S4 (VIN WAUB4AF47JA225389). Gray, sedan, gasoline. 2 NHTSA recall campaigns for this model year. Free specifications, registration region and recall data.
Full vehicle history report
What a full report checks for VIN WAUB4AF47JA225389
A full report searches national title databases (NMVTIS) and licensed history providers for this VIN and shows whatever records are on file — not every vehicle has every record type. The decode, safety recalls and owner complaints above are always free.
History reports cover US-titled vehicles only. This car is registered in Ukraine, so title, salvage and odometer records from the US national title database (NMVTIS) don't apply to it. The registration record, specifications and recall data on this page are free.
At a glance
Vehicle identity & specifications
MPG & running costs
U.S. EPA fuel-economy estimates for the 2018 Audi S4.
Source: U.S. EPA / DOE fueleconomy.gov. Actual mileage varies with trim and driving conditions.
Crash-test safety ratings
NHTSA 5-Star Safety Ratings for the 2018 Audi S4.
Rollover risk: 9.9% — NHTSA's estimated chance of rollover in a single-vehicle crash (dynamic test: no tip).
Source: NHTSA New Car Assessment Program, tested as the 2018 Audi S4 4 DR AWD. Ratings can differ by body style and drivetrain.
Estimated 5-year cost to own
A rough guide to what running a 2018 Audi S4 costs over five years and 75,000 miles.
How this is estimated: fuel is the U.S. EPA annual cost at 15,000 miles a year. There aren't enough comparable listings to estimate depreciation for this model, so it is left out. Not included: insurance, maintenance, repairs, taxes, registration and finance costs. Treat it as a comparison guide, not a quote.
Safety recall campaigns 2
AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION:FRONT PASSENGER
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 …
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
NHTSA Campaign #21V874000 · manufacturer #74E3 · 10/11/2021AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE
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.
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.
NHTSA Campaign #19V547000 · manufacturer #74D9 · 24/07/2019Note: recall data comes from the U.S. NHTSA and covers the US-market version of this model. A car registered in Ukraine may have different campaigns — check with the manufacturer's local importer.
These are NHTSA recall campaigns for this model year, last checked 7 Oct 2026. They don't show whether this particular car has had the repair done — check this VIN on NHTSA.gov or ask a franchised dealer. Recall repairs are free.
We'll email you the moment a new safety recall is issued — no spam, unsubscribe any time.
Common problems & what to inspect
Based on all 7 owner complaints filed with NHTSA for the 2018 Audi S4, here are the most-reported problem areas — and what to check before you buy.
🔍 Listen for knocks or ticking, check for leaks and blue/white exhaust smoke, and make sure it doesn't overheat. No check-engine light should be on.
🔍 Listen for clunks over bumps, check the car sits level, and look for uneven tire wear and worn shocks or struts.
🔍 Brakes should feel firm and quiet — no grinding, pulsing or pulling. Check for an ABS light and uneven pad/rotor wear.
🔍 Inspect for rust, fresh undercoating, mismatched paint, uneven panel gaps and any sign of prior collision or frame repair.
🔍 Drive through every gear: watch for slipping, hard or delayed shifts, and shudder. Check for transmission/driveline leaks and noises.
🔍 Test cruise control and throttle response, and watch for any hesitation or unintended acceleration.
Pre-purchase checklist
- Match the VIN on the dash, door jamb and title — they must be identical.
- Cold-start the engine; listen for knocks and check for blue or white exhaust smoke.
- Test-drive through all gears at low and highway speed — no slipping, shudder or pulling.
- Confirm every warning light clears at startup (none should stay on).
- Check fluids — oil, coolant, transmission — for level, color and leaks.
- Look underneath for rust, fresh undercoating or signs of collision repair.
- Always get an independent pre-purchase inspection from a trusted mechanic.
Owner complaints 7
Complaints filed with NHTSA by owners of the 2018 Audi S4.
ENGINE
Water pump defect for the 3.0L ea839 turbo engine found across many Porsche and Audi models. Defect causes damage to vacuum lines, thermostat, and can eventually lead to engine failure if not resolved. No way of knowing this is happening until you start to lose coolant (which will throw an engine code), but by that point the damage is done. There was a rec…
NHTSA ODI #11665383ENGINE
My 2018 Audi S4 has a catastrophic engine failure issue and this is common with the EA839 engine. There is a knocking in the motor that is caused by internal engine parts (rocker arms needle bearings) becoming loose and dislodged. The metal shavings travel in the motor oil and destroy the engine from the inside. Hendrick Audi northlake examined the car on Fe…
NHTSA ODI #11648098ENGINE
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.
NHTSA ODI #11581607SUSPENSION
Audi Dealer inspection revealed Rear spring is broken and mounts are deteriorating. Dealer states not common and would result in accident if not repaired. Research indicates broken springs common with certain Audi vehicles (A4/S4, Q5 & Q7), especially 2018 model year. See Audi World forum website. It would appear these springs are defective and will result…
NHTSA ODI #11498324SERVICE BRAKES
THE VEHICLE'S PRE SENSE AUTO-BRAKING AND BRAKING ALERT JOLT HAS BEEN ACTIVATING ERRONEOUSLY AND HAVE ALMOST CAUSED ACCIDENTS AT SPEED. THE SYSTEM CANNOT BE PERMANENTLY DISABLED, IT DEACTIVATES UPON IGNITION RESTART. THE SYSTEM HAS ERRONEOUSLY AND AGGRESSIVELY JOLTED THE BREAKS ON SEVERAL OCCASIONS ON CURVES, ESPECIALLY WHEN CRESTING A HILL WITH VEHICLES PA…
NHTSA ODI #11084045STRUCTURE
THERE ARE TWO LARGE "UNDERRIDE GUARD" PANELS ON THE UNDERSIDE OF THE VEHICLE THAT ARE FASTENED BY SMALL, LOOSE-FITTING PLASTIC CLIPS. THERE IS ALSO FELT SOUND-DEADENING MATERIAL ON THE EXTERIOR SIDE OF THIS PANEL. WHEN THE VEHICLE IS DRIVEN IN RAIN OR SNOW, THE PANEL COLLECTS SNOW OR WATER UNDER NORMAL DRIVING CONDITIONS AND BREAKS FREE UNEXPECTEDLY, CAUSING…
NHTSA ODI #11073046POWER TRAIN,VEHICLE SPEED CONTROL,ENGINE
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) AN…
NHTSA ODI #11051028
