This bulletin provides informaiton when the engine is not running smoothly, misfiring.
full bulletin at NHTSA ↗2011 Audi Q5 engine problems
moderate Owners of the 2011 Audi Q5 have filed 28 NHTSA complaints about the engine, typically surfacing around 92,000 miles at roughly $3,100 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See engine across all vehicles →
Failure mileage
Complaints
28
Recalls
0
Avg fix
$3,100
| Model year | engine complaints |
|---|---|
| 2010 Q5 | 6 |
| 2011 Q5 (this page) | 28 |
| 2013 Q5 | 25 |
| 2014 Q5 | 29 |
| 2015 Q5 | 35 |
1fire
When does it fail?
Of the 28 engine complaints filed for the 2011 Audi Q5, here's the actual mileage breakdown — failures cluster heaviest at 75,000-100,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Owners have filed 28 engine complaints with NHTSA against this vehicle, but no formal recall covers the issue — the federal record reflects what manufacturers have admitted, not everything owners are reporting.
Among the 12 model years of Audi Q5 in our records for engine problems, this one ranks #3 by owner-complaint volume.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering engine on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
This bulletin provides information on VIN Plates, Safety Certification labels, and the ordering procedures.
full bulletin at NHTSA ↗This bulletin provides information regarding UV leak additive for finding oil leaks.
full bulletin at NHTSA ↗This bulletin provides informatin when the engine does not run smoothly at idling speeds.
full bulletin at NHTSA ↗This bulletin provides information when the MIL is on; DTCs for misfire, air/fuel ratio imbalance, or lean fuel system stored in the ECM P030000.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Owners consistently report catastrophic timing chain tensioner failure between 77,000 and 110,000 miles. The tensioner slips or breaks, causing the chain to slip and allowing pistons to strike intake valves, wrecking the engine with no warning lights in many cases. Repair costs run $4,000–$14,000 depending on collateral damage to cylinder head, turbo, and pistons.
High oil consumption is chronic and starts early—some owners burn a quart every 300–1200 miles within the first year of ownership. Dealers initially told owners this was normal design, but leak-down tests revealed leakage past piston rings; some engines required complete rebuild ($5,000+) around 100,000 miles.
Fuel injectors fail on 3.2 FSI models despite Audi's extended warranty covering only 2.0 TFSI engines. Owners with identical misfire complaints were rejected for warranty coverage, even though the same fault is acknowledged as common for the model year.
Ignition coils, spark plugs, and engine seals fail repeatedly. One owner experienced engine fire while parked with no prior warning. Post-repair problems are common—turbo replacement didn't hold, and oil separator pipes were left disconnected after service.
Dealers withheld knowledge of recalls during multiple service visits, and Audi coverage of collateral damage is partial (25–50%) when timing chain failure causes secondary failures.
Same Audi Q5 engine reports on nearby years: 2013 · 2014
Failure modes owners describe
Timing Chain Tensioner Failure
Timing chain tensioner slips, stretches, or breaks, causing timing chain to fail and leading to catastrophic engine damage including piston-to-valve contact, cylinder head cracking, and complete engine failure. Often occurs without warning lights.
When: 42,000 to 110,000 miles; reported at 77k, 79k, 98k, 110k miles
Symptoms owners cite: Engine won't start; Engine cranks but won't turn over; Hard idle after sitting; Loss of acceleration; Sudden stalling while driving; Bucking sensation before stalling; No warning lights in some cases
Codes mentioned: P0018
Repairs/costs cited: Engine rebuild or replacement; costs reported at $4,000–$14,000 depending on extent of collateral damage to cylinder head, turbo, and pistons. Audi has covered partial costs in some cases (25–50% in claims reviewed).
Recalls/TSBs owners mention: Recall issued for certain 2.0 TFSI models; extended warranty exists for 2.0 TFSI engines (codes CBFA, CCTA) but does not cover 3.2 FSI (code CALB). Audi split costs with some owners; partial coverage only on collateral damage. Class action lawsuit filed in New Jersey.
High Oil Consumption
Engine consumes oil at abnormally high rates well above normal design specifications. Occurs early in ownership and continues past warranty. Owners report burning 1 quart per 300–1200 miles; one owner spent $90/month on oil alone. Root cause attributed to worn piston rings and design defects.
When: Less than 1 year after purchase; reported at 67k, 74k, 75k, 100k miles and throughout ownership
Symptoms owners cite: Excessive oil consumption; Smoke from exhaust under acceleration; Blue/gray smoke visible; Oil level dropping between services
Repairs/costs cited: Repairs included crankcase breather valve replacement, front main seal replacement, piston and ring replacement, complete engine rebuild ($5,000+). One owner reported oil consumption test performed at dealer.
Recalls/TSBs owners mention: Dealers initially claimed consumption was normal/acceptable if 1/4 quart per 1200 miles or less (per design spec). Some engines rebuilt under warranty; one owner cited oil consumption repair under recall. No formal recall for all affected vehicles.
Fuel Injector Malfunction
Fuel injectors fail, causing check engine light and misfire conditions. Audi issued extended warranty for fuel injectors on 2.0 TFSI engines (codes CBFA, CCTA) but 3.2 FSI vehicles (code CALB) not covered despite identical failure mode and model year.
When: Under 100,000 miles; one owner at under 120,000 miles within 10 years of purchase
Symptoms owners cite: Check engine light illumination; Misfiring; Rough idle
Repairs/costs cited: Fuel injector replacement performed; parts cost not specified. Owner required three returns to dealer before issue was acknowledged.
Recalls/TSBs owners mention: Extended warranty issued by Audi for 2.0 TFSI only; rejected claims for 3.2 FSI despite same fault. Dealers acknowledged fuel injector defect as common for model year.
Ignition Coil and Spark Plug Failures
Ignition coils and spark plugs fail repeatedly, causing check engine light and engine shake. Repairs are expensive and occur frequently.
When: During operation; ongoing issue
Symptoms owners cite: Check engine light constantly on; Engine shaking when coils/plugs fail; Engine light illuminates during motion (fuel system) or shortly after startup (ignition system)
Repairs/costs cited: Ignition coil and spark plug replacement; owner noted repairs are very expensive with recurring failures.
Engine Fire
Vehicle caught fire while parked with no warning signs or indicator lights. Fire engulfed entire vehicle and required 30 minutes for firefighters to extinguish. Cause speculated as electrical.
When: Approximately 15 minutes after parking; no mileage reported
Symptoms owners cite: Fire visible at front grille; Hood melted; No warning lights prior to fire; Vehicle properly maintained with no prior indicators
Repairs/costs cited: Vehicle destroyed; cause not definitively determined.
Engine Oil Leak from Seals/Gaskets
Engine leaks oil persistently throughout ownership. One owner reported oil leak from day of purchase as pre-certified vehicle. Leak was severe enough to fracture timing chain due to oil starvation.
When: Present throughout ownership; one instance at 42,000 miles where leak caused timing chain fracture
Symptoms owners cite: Visible oil leaks; Chronic oil consumption requiring frequent top-ups
Repairs/costs cited: Front main seal replacement, crankcase repairs. One instance of complete engine rebuild due to oil leak-induced timing chain failure.
Recalls/TSBs owners mention: One owner reported Audi replaced pistons due to design defect under warranty 3 years before catastrophic failure.
Engine Stalling and No-Start Condition
Engine stalls unexpectedly while driving or refuses to start. In some cases preceded by warning signs (sputtering, difficulty maintaining idle). Multiple reports of catastrophic timing chain failure as underlying cause.
When: Various mileages from 93,000 to 110,000 miles
Symptoms owners cite: Engine sputtering with warning half-mile before failure; Loss of power requiring foot on accelerator to prevent stall; Engine will not restart after stalling; Sudden stalling during driving; Inability to start in morning
Repairs/costs cited: Engine not repaired in some cases; owner contacted NHTSA instead of dealership. Underlying issues include timing chain failure.
Post-Repair Service Issues
Engine problems persist or worsen after dealer repairs. One owner had turbo replaced for $8,000 but vehicle began not starting well and stalling shortly after. Another experienced misfiring after oil consumption repair due to improperly reattached oil separator pipe.
When: Within weeks to days of repair completion
Symptoms owners cite: Not starting well after repair; Stalling during operation after repair; Misfiring after oil consumption repair
Repairs/costs cited: Turbo replacement ($8,000) followed by return of stalling/starting issues. Oil separator pipe found not reattached during prior service.
Timing Belt Failure with Piston Damage
Timing belt failure (distinct from timing chain failures) occurs at low mileage. Belt destruction damages pistons, rods, and cylinders, requiring engine replacement.
When: 79,000 miles; reported as second engine for this vehicle
Symptoms owners cite: Warning light illumination; Check engine light
Repairs/costs cited: Complete engine replacement; this was owner's second engine replacement on same vehicle.
Oil Level Monitoring System Defect
Vehicle sold without oil dipstick and electronic oil-level display on dash rarely functions, making it difficult for owners to monitor oil level—a critical issue on vehicles with known high oil consumption.
When: Ongoing since purchase
Symptoms owners cite: No dipstick provided; Oil level button sequence rarely works or fails to display level
Synthesized from 28 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 3 most recent
My 2011 Audi q5 would not start one morning when trying to start the car in my garage (dec 2019). I had it towed to the fletcher jones Audi dealership in chicago il where I have been a loyal customer since moving here in 2014. They performed a diagnostic and identified that the timing chain tensioner had slipped, and may have caused "catastrophic" failure to my engine. They proceeded to ask…
Oil consumption issue while driving down the road. Under any acceleration, smoke comes out the exhaust. Uses about 1 quart of oil per 300 miles. Leak down test was done, showing leakage past piston rings. Resulting in a complete rebuild of engine costing me $5,000 plus. Vehicle has just about 100,000 miles.
After my car had been sitting for 8 days I went in garage to crank it. The car cranked but shook violently. I immediately shut it off. I tried to re crank it but it would not crank. I called Audi and had it towed in. They told me the "lifetime" timing chain was stretched. That the repair would cost between $4,000 and $7,000 to fix. I did some quick searching and saw other folks with…
Had engine trouble with your 2011 Audi Q5?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the engine problem on the 2011 Audi Q5?
It's a documented issue but not catastrophic. 28 complaints have been filed. Repairs average $3,100 and most owners catch it before it causes a breakdown.
At what mileage does the engine typically fail?
Across the 26 complaints that reported odometer mileage, most engine failures cluster between 72,000 and 100,000 miles, with the median around 92,000. A quarter of owners report trouble before 72,000; a quarter make it past 100,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to engine?
No active recalls currently cover engine issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2011/Audi/Q5.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.