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ProblemsByVin Checklist / 2009-AUDI-A4

Pre-purchase · Buyer's checklist

2009 Audi A4 inspection checklist

The 2009 Audi A4 has 1 critical safety recall and a documented pattern of issues across 6 component categories. Before you sign anything, walk through this list with the seller. Skip nothing — the items below come from 142 owner reports already on file with NHTSA.

1 Verify safety recalls before you drive off

Recall fixes are free regardless of warranty status. Ask the seller for proof — or have the dealer pull the VIN history.

Volkswagen Group of America, Inc — fix: Audi will notify owners, and dealers will replace the passenger frontal air bag inflator, free of charge. The recall began March 30, 2018. Owners may contact Audi customer service at 1-800-253-2834. Note: This recall has been superseded by recall number 18V427.
NHTSA 17V032000 · severity: critical

2 Inspect the airbags

What to look for: Anything that looks, sounds, or smells different from peer vehicles of the same year and trim. (51 owner complaints on this vehicle · typical repair $1,100 · failures cluster ~60,600 mi)

Walk around and note any visible damage, wear, or aftermarket modifications
Open the hood and look for fresh fluid leaks, loose connectors, or recent part swaps
Sit in every seat and operate every control to confirm function

See full airbags report for this vehicle →

3 Inspect the engine

What to look for: Blue smoke on cold start (oil burning), white smoke at temperature (coolant), knock or tick that doesn't go away after warm-up, oil spots under the vehicle. (40 owner complaints on this vehicle · typical repair $3,100 · failures cluster ~83,928 mi)

Oil dipstick — level on the full mark, color amber not black, no milky residue (head gasket sign)
Coolant reservoir — level, no oil film floating, no rust
Spark plug wells (look down with a flashlight) — oil pooled means valve cover gasket
Timing chain or belt service history (interference engines = $1,500+ if it breaks)
Exhaust smoke briefly after a long idle then a rev

On the test drive: Drive until the gauge reaches operating temp, then check temp stability under load on a hill. Surging or temp climbing under load = thermostat or water pump.

See full engine report for this vehicle →

4 Inspect the steering

What to look for: Wandering on the highway, clunks when turning, slop in the wheel before the tires respond, power steering whine. (15 owner complaints on this vehicle · typical repair $700 · failures cluster ~38,805 mi)

Tire wear pattern — uneven wear across the tread means alignment or worn suspension
Power steering fluid level (where applicable — most newer vehicles are electric)
Tie rod boots and ball joint boots for tears
Steering wheel free play — should be less than 1 inch at the rim

On the test drive: On a smooth highway, take hands off briefly (when safe) — vehicle should track straight. Pulling left or right means alignment or worn front-end parts.

See full steering report for this vehicle →

5 Inspect the visibility

What to look for: Wiper streaks even on a fresh blade, blower fan that doesn't change speeds, foggy or yellowed headlight lenses, sunroof drains plugged (water on headliner). (5 owner complaints on this vehicle · typical repair $350 · failures cluster ~5,700 mi)

All wiper speeds front and rear (if equipped) plus washer fluid spray pattern
Defroster — front and rear, every grid line working on the rear glass
HVAC fan on every setting, plus mode (vent, floor, defrost) selector
Sunroof open/close and tilt — check for grinding noises

See full visibility report for this vehicle →

6 Inspect the body

What to look for: Paint mismatch between panels (prior accident), rust on rocker panels and wheel wells, door alignment gaps that don't match side-to-side, weatherstrip wear. (4 owner complaints on this vehicle · typical repair $1,500 · failures cluster ~60,115 mi)

Panel gaps — should be even and consistent; tight on one side means body work
Trunk and hood weatherstrips for cracks
Inside the trunk, under the spare — water staining means a leak
Door hinge bolts for paint dust (telltale of door replacement)
VIN plate on the dash matches the VIN sticker on the door jamb

See full body report for this vehicle →

7 Inspect the powertrain

What to look for: Hesitation on takeoff, harsh or delayed shifts, vibration at highway speed, fluid leaks on the driveway under the engine bay or transmission pan. (4 owner complaints on this vehicle · typical repair $2,500 · failures cluster ~50,200 mi)

Transmission fluid color and smell — fresh ATF is red, brown or burnt smell is bad
Engine and transmission mounts (cracks or visible sag)
CV boots front (and rear on AWD) — any tears mean a $300–$800 axle replacement
Driveshaft U-joints and rear differential fluid level on RWD/AWD

On the test drive: Drive 15+ minutes including a freeway on-ramp at full throttle, a steep hill, and stop-and-go traffic. Listen for clunks on shifts, flares between gears, and shudders during light acceleration at 30–50 mph (torque converter symptom).

See full powertrain report for this vehicle →

8 Paperwork — before you sign

The seller's transparency on these tells you what kind of seller you're dealing with.

Title in seller's name (not "open title" or "signed by previous owner")
Service records — at least the last 24 months
VIN on the dash matches the door jamb sticker and the title
Run a paid vehicle history report (Carfax or AutoCheck) — accident, salvage, odometer rollback
Confirm any open recalls have been completed (NHTSA VIN lookup)
If financing, get the rate in writing before you set foot on the lot

Inspection items derived from 142 owner complaints and 2 active recall campaigns filed with NHTSA on the 2009 Audi A4. Category-specific guidance is written by ProblemsByVin contributors with ASE-certified mechanic review. This checklist is meant to surface known patterns — it doesn't replace a paid pre-purchase inspection by a qualified shop, which we recommend for any used vehicle priced over a few thousand dollars.