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2018 Audi Sq5 Recalls, Issues & Maintenance

The 2018 Audi Sq5 carries 5 open NHTSA recalls — most recently covering body control module/bcm and caliper. Owners report 5 recurring issue clusters, led by “Water intrusion causing electrical module failure.” Audi follows the VW Group Longlife service rhythm: oil and minor service every 10,000 miles or 12 months, whichever comes first, using oil that meets VW 502 00 / 504 00 (or 508 00 for newer 0W-20 engines) — generic synthetic does not qualify. S tronic dual-clutch gearboxes need fluid service every 40,000 miles despite 'lifetime fill' claims. Fully electric models (e-tron, e-tron GT) skip oil service entirely but keep brake-fluid, cabin-filter, and coolant-circuit intervals.

5 Open Recalls

Source: NHTSA

ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM

Campaign #21V947000 · Aug 12, 2021

Issue: Volkswagen Group of America, Inc. (Audi) is recalling certain 2021-2022 Q5 Sportback, SQ5 Sportback, 2018-2022 Q5, and SQ5 vehicles. A liquid spill in the rear seat, or water ingress from an insufficient body seam underneath the vehicle may allow liquid to penetrate the gateway control module, causing it to shutdown.

Risk: A gateway control module shutdown will suddenly reduce engine power, increasing the risk of a crash.

Fix: Dealers will install a protective cover on the gateway control module and seal an underbody seam as necessary, free of charge. Owner notification letters were mailed January 21, 2022. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 90S9.

SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER

Campaign #18V369000 · Jan 6, 2018

Issue: Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2018 Volkswagen Atlas, Passat, Beetle, Beetle Convertible, Golf, Golf SportWagen and GTI and Audi Q5 and SQ5 vehicles. The brake caliper pistons on these vehicles may have insufficient coating, potentially reducing the brake performance.

Risk: A reduction of braking performance can increase the risk of a crash.

Fix: Volkswagen and Audi will notify their owners. Audi dealers will bleed the rear brakes. Volkswagen dealers will bleed the front and rear brake calipers. Note: Owners are advised not to drive their vehicles until the brake system has been checked. The recall began June 29, 2018. Owners may contact Volkswagen customer service at 1-800-893-5298 and Audi customer service at 1-800-253-2834. Volkswagen's numbers for this recall are 47N8, 47N9, and 47N6.

WHEELS:HUB

Campaign #19V416000 · May 6, 2019

Issue: Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2018-2019 Audi Q5 and SQ5 vehicles. The wheel arch cover trim may loosen and detach.

Risk: The detached trim may become a road hazard, increasing the risk of crash.

Fix: Volkswagen will notify owners, and dealers will secure the wheel arch trim with an additional screw and nut, free of charge. The recall began July 26, 2019. Owners may contact Volkswagen customer at 1-800-253-2834. Volkswagen's number for this recall is 66K6.

STRUCTURE:BODY

Campaign #19V737000 · Oct 16, 2019

Issue: Volkswagen Group of America, Inc. (Audi) is recalling certain 2018-2019 Audi SQ5 and 2018-2020 Audi Q5 vehicles. The rear wheel arch cover trim may loosen and detach from the vehicle.

Risk: The detached trim may become a road hazard, increasing the risk of crash.

Fix: Audi will notify owners, and dealers will replace the four clips securing the forward part of the rear wheel arch trim, free of charge. The recall began November 1, 2019. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 66K8.

SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:MASTER CYLINDER

Campaign #19V277000 · Aug 4, 2019

Issue: Volkswagen Group of America, Inc. (Audi) is recalling certain 2018-2019 Audi Q5 and SQ5 vehicles. The brake master cylinder casting may be too short.

Risk: A short casting can cause a sudden loss of brakes, increasing the risk of crash. The electronic parking brake and its emergency brake function are not affected and will still function.

Fix: Audi has notified owners, and dealers will inspect the brake master cylinder, replacing it as necessary, free of charge. The recall began May 3, 2019. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 47O9.

Recall data refreshed Sep 13, 2026.

Known issues for this vehicle

What drivers and federal regulators have officially reported about the 2018 Audi Sq5.

Reported to NHTSA

Water intrusion causing electrical module failure

ELECTRICAL SYSTEM

6 NHTSA complaints · 2023-01 → 2024-12

“Heavy rain leaked into the cabin of my SUV,and damaged the module, no controls worked through the key fob, no start . I keep my SUV under cover 90% of the time”
— Owner report, NHTSA ODI #11632982
“Car's electrical system fried overnight during a rainstorm. All systems unresponsive to keys or key faub. Car was towed to used dealership and they told me due to drainage system blockage a pool of water collected in rear battery compartment and submerged the battery”
— Owner report, NHTSA ODI #11626821
“During a rainstorm, water drained from roof drains that are apparently supposed to be cleaned & maintenance done by dealership on a regular basis but were clogged due to them not being any maintenance done”
— Owner report, NHTSA ODI #11608218

Read all complaints on NHTSA →

Forward collision avoidance system phantom braking

FORWARD COLLISION AVOIDANCE

4 NHTSA complaints · 2018-10 → 2023-06

“The Forward Collision Warning system in my 2018 Audi SQ5 is meant to autonomously apply the vehicle's brakes in the event the car senses an oncoming forward collision”
— Owner report, NHTSA ODI #11526568
“Two issues: 1. Phantom braking, sudden deceleration, vehicle came to a rapid complete stop on road. Audi assist light came on. Road Conditions: clear, dry, very good visibility for night conditions”
— Owner report, NHTSA ODI #11452367
“TL* THE CONTACT OWNS A 2018 AUDI SQ5. WHILE DRIVING APPROXIMATELY 25 MPH, THE COLLISION AVOIDANCE SYSTEM ERRONEOUSLY ACTIVATED AND CAUSED THE VEHICLE TO ABRUPTLY STOP. THERE WERE NO OTHER VEHICLES IN THE VICINITY AT THE TIME OF THE FAILURE”
— Owner report, NHTSA ODI #11140632

Read all complaints on NHTSA →

Engine oil and coolant leaks

ENGINE

4 NHTSA complaints · 2021-03 → 2026-07

“While driving a 2018 Audi SQ5 with the EA839 3.0T engine, a coolant warning light activated and engine temperatures began rising to 210-215°F. The vehicle was pulled over immediately”
— Owner report, NHTSA ODI #11748361
“Oil leaking from the engine. Mechanic determined that it was the Filter Housing. They replaced the filter housing and since then, the problem is all good”
— Owner report, NHTSA ODI #11608039
“MY CAR KEEPS SAYING PLEASE REDUCE OIL LEVEL”
— Owner report, NHTSA ODI #11404184

Read all complaints on NHTSA →

Steering column noise and misalignment

STEERING

2 NHTSA complaints · 2020-09 → 2023-07

“I’m hearing squeaking noise from the steering column when steering left or right slowly of my Audi SQ5 2018 model”
— Owner report, NHTSA ODI #11530940
“WHILE DRIVING, THE 'STEERING MALFUNCTION' WARNING LIGHT CAME ON. THE WARNING SAID THAT IT WAS OK TO DRIVE. ON THE SAME DAY, THE STEERING WHEEL BECAME ASKEW AND WAS NO LONGER ALIGNED”
— Owner report, NHTSA ODI #11353852

Read all complaints on NHTSA →

Tire sidewall and tread failure

TIRES

2 NHTSA complaints · 2019-10 → 2021-07

“Tire sidewall is splitting. There have been no accidents or incidents that could have caused this type of sidewall damage. The tire is a Contisportcontact 5P, 255/40 zr21”
— Owner report, NHTSA ODI #11424330
“I PURCHASED MY 2018 AUDI SQ5 BRAND NEW FROM THE DEALERSHIP IN APRIL 2018. I BELIEVE THE PIRELLI TIRES THAT WERE PUT ON THE CAR DURING PRODUCATION ARE DEFECTIVE”
— Owner report, NHTSA ODI #11266202

Read all complaints on NHTSA →

Issues on other model years

Source: NHTSA Office of Defects Investigation (ODI). Complaint data refreshed Sep 13, 2026. Investigation data refreshed Sep 13, 2026.

We display NHTSA's record with attribution; we don't editorialize on what these complaints mean for any specific vehicle.

Essential maintenance

Critical for safety and preventing major damage

Engine Oil & Filter (Longlife Service)

Every 10,000 mi

Replace oil and filter every 10,000 miles or 12 months with VW 502 00 / 504 00 / 508 00 spec oil. S and RS models driven hard: many owners shorten to 5,000-7,500 miles. Wrong-spec oil is the leading cause of TFSI timing-chain tensioner and PCV problems.

Estimated cost — typical U.S. ranges

Dealer

~$120–$160

Shop

~$85–$115

DIY

~$25–$55

Full synthetic costs more than conventional. 5-quart 0W-20 + filter is the typical bill.

Tire Rotation

Every 10,000 mi

Rotate every 10,000 miles with the oil service. quattro models: keep all four tires within 4/32" of each other — mismatched wear stresses the center differential.

Estimated cost — typical U.S. ranges

Dealer

~$85

Shop

~$60

DIY

Free

Often free at the shop where you bought the tires — worth asking before paying.

Brake Inspection

Every 10,000 mi

Inspect pads, rotors, and wear sensors every 10,000 miles. Audi uses electronic pad-wear sensors on most models — replace the sensor with the pads.

Estimated cost — typical U.S. ranges

Dealer

~$85

Shop

~$60

DIY

Free

Most shops do this free as a courtesy with any service. Don't pay separately if you can avoid it.

Brake Fluid

Every 24,000 mi

Replace DOT 4 brake fluid every 2 years regardless of mileage — Audi's published schedule is time-based because the fluid absorbs moisture.

Estimated cost — typical U.S. ranges

Dealer

~$180–$200

Shop

~$125–$140

DIY

~$10–$25

DOT 3 or 4 — match the cap. Vacuum bleeders make this a one-person DIY.

S tronic Dual-Clutch Fluid

Every 40,000 mi

S tronic (DSG) gearboxes on A3/S3/RS 3, Q3, TT, and many A5/Q5 models: replace fluid and filter every 40,000 miles with the VW Group-spec fluid for your gearbox code. Skipping this service is the most common cause of mechatronic failure.

Estimated cost — typical U.S. ranges

Dealer

~$470–$640

Shop

~$330–$450

DIY

Pro only

VW/Audi DSG service needs a fluid-fill procedure at a specific temperature — shop equipment territory.

Important maintenance

Keeps your vehicle running smoothly and efficiently

quattro Coupling Fluid (Transverse Models)

Every 40,000 mi

A3/S3/RS 3, Q3, and TT use a Haldex-style rear coupling: replace its fluid roughly every 40,000 miles (some model years specify sooner — check your manual). Longitudinal quattro (A5-A8, Q5, Q8) has no coupling service; see differential fluid instead.

Estimated cost — typical U.S. ranges

Dealer

~$220–$290

Shop

~$155–$205

DIY

~$40–$90

VW/Audi/Volvo AWD coupling — specific fluid required. Filter usually swapped at the same time.

Spark Plugs

Every 40,000 mi

TFSI turbo engines: new plugs every 40,000 miles. RS models with the 2.5 TFSI five-cylinder: consider 30,000 miles under track or hard street use.

Estimated cost — typical U.S. ranges

Dealer

~$285–$390

Shop

~$200–$275

DIY

~$25–$100

Iridium plugs cost more but last 100k+ miles. V6/V8 access varies wildly — some are tough.

Engine Air Filter

Every 40,000 mi

Replace every 40,000 miles; inspect at 20,000 on turbocharged engines — a clogged filter shows up as sluggish boost response first.

Estimated cost — typical U.S. ranges

Dealer

~$60–$95

Shop

~$45–$70

DIY

~$15–$40

5-minute job on most cars; the airbox lid usually has clips, no tools needed.

Timing Chain (EA888 — Inspect Tensioner)

On condition / lifetime

2.0 TFSI (EA888) engines before roughly 2013 had timing-chain tensioner failures — have the tensioner revision checked by 80,000 miles on earlier cars. Later engines carry the updated design with no scheduled service.

Estimated cost — typical U.S. ranges

Dealer

~$85

Shop

~$60

DIY

Pro only

Timing chains are normally lifetime. Listen for rattle on cold start — that's the actionable signal. Replacement is major work, quote separately.

Recommended maintenance

Extends the life of your vehicle and improves comfort

Differential Fluid (Longitudinal quattro)

Every 60,000 mi

Q5, Q8, and A5-A8 quattro: independent Audi specialists recommend front/rear differential fluid service around 60,000 miles even where Audi lists it as lifetime fill.

Estimated cost — typical U.S. ranges

Dealer

~$150–$195

Shop

~$105–$135

DIY

~$20–$50

Drain plug + fill plug — straightforward DIY. AWD vehicles have two; budget for both.

Dust & Pollen Filter

Every 20,000 mi

Replace the cabin air filter every 20,000 miles or 2 years. Audi specifies an activated-carbon filter on most models.

Estimated cost — typical U.S. ranges

Dealer

~$60–$95

Shop

~$45–$70

DIY

~$15–$40

Usually behind the glovebox. Shops charge labor for a 10-minute job — easy DIY win.

G12evo / G13 Coolant

On condition / lifetime

Audi coolant is labeled lifetime fill. Independent VW/Audi specialists recommend a refresh around 5 years or 100,000 miles to protect the water pump and thermostat housing — and only with the correct pink/lilac VW Group coolant.

Estimated cost — typical U.S. ranges

Dealer

~$285–$330

Shop

~$200–$235

DIY

~$25–$60

Use the manufacturer-specified coolant — wrong color/chemistry can damage the cooling system.

Fatal crash history & reported problems

Occupant deaths in fatal crashes (FARS)

4 crashes 2010–2024

FARS counts every occupant death in a fatal crash, whatever the cause — it does not mean the vehicle was at fault or defective. Counts are not adjusted for how many of each vehicle are on the road. How to read this number

Owner-reported problem signals

Separate from the federal fatality data above: complaints owners filed with NHTSA about this year and model. These are reports of problems, unverified, and are counted here only as signals.

1

complaints mentioning a crash

0

complaints mentioning a fire

Reviewed known issues for this vehicle·Open recalls for this vehicle

Typical U.S. ranges. Actual quotes vary by shop, parts choice, and vehicle condition.

How we estimate: Dealer = OEM parts × 1.4 + labor × $165/hr. Shop = parts + labor × $115/hr. DIY = parts only.

This maintenance schedule for the 2018 Audi Sq5 reflects Audi's published service intervals and the Audi Service Interval Display system. Your actual service needs may vary based on driving conditions, climate, and vehicle usage. Always consult your owner's manual for model-specific recommendations.

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