Find answers to the most common Audi repair and maintenance questions at TP Auto Repair. Learn about service intervals, diagnostics, parts, and expert tips for every Audi model.
Symptoms of a Bad Knock Sensor A bad knock sensor can cause reduced engine power, poor fuel economy, warning lights, unusual engine noises, and in severe cases engine damage, because the engine control unit (ECU) can no longer accurately detect and respond to knocking (pre‑ignition or detonation). Understanding the warning signs early helps drivers avoid …
What Size Rotors Are on a 2018 Audi S5? The 2018 Audi S5 typically uses approximately 350 mm (13.8 in) front brake rotors and 330 mm (13.0 in) rear brake rotors on most non-ceramic, factory configurations, but exact sizing can vary slightly by market and specific package, so confirming via VIN, build sheet, or direct …
How to Tell if the Turbo Is Bad on an Audi A4 A failing turbo on an Audi A4 usually reveals itself through a mix of power loss, unusual noises, excessive smoke, and warning lights; confirming the problem involves checking these symptoms systematically, inspecting for oil leaks, and reading fault codes before condemning the turbo …
Symptoms of a Bad PCV Valve A failing PCV (Positive Crankcase Ventilation) valve commonly causes rough or high idle, a whistling or hissing noise, check-engine lights with lean/rich or misfire codes, oil leaks or sludge, increased oil consumption with blue exhaust smoke, fuel odors, poor fuel economy, stalling, and sometimes collapsed or cracked PCV hoses. …
What Kind of Oil a 2019 Audi A4 Takes A 2019 Audi A4 generally requires fully synthetic engine oil that meets Audi/VW specification VW 502 00 (for most gasoline engines) or VW 504 00 (for some newer long-life intervals), typically in SAE 0W‑40, 5W‑40, or 0W‑30 viscosity depending on climate and engine variant. In practical …
What Kind of Oil Does a 2011 Audi Take? A 2011 Audi typically requires fully synthetic engine oil that meets VW/Audi specification VW 502 00 (for most gasoline engines) or VW 504 00/507 00 (for certain newer or diesel engines), most commonly in 5W-40 or 5W-30 viscosity depending on the exact model and engine. To …
How Much Does It Cost to Replace an Audi Air Filter? Replacing an Audi air filter typically costs between $40 and $160 in the United States, depending on the model, whether it’s the engine air filter or the cabin air filter, and whether you go to a dealership, an independent mechanic, or do it yourself. …
What Kind of Oil Does an Audi R8 Take? An Audi R8 typically requires fully synthetic engine oil that meets specific VW/Audi approvals—most commonly VW 502 00 or VW 504 00—such as 5W-30 or 5W-40, but the exact grade and spec depend on model year, engine version (V8 or V10), and market, so owners should …
What Size Battery Do You Need for a 2009 Audi A4? The correct replacement battery for most 2009 Audi A4 models is a Group H6 (also known as Group 48) with around 70–80 Ah capacity and at least 680–800 CCA, but exact size and specs can vary by engine, equipment, and climate, so checking the …
What Paint Code Is My Audi? How to Find It, Decode It, and Use It Your Audi’s paint code is usually a three-character alphanumeric code (sometimes with additional characters) that precisely identifies the factory color of your car; you can typically find it on a vehicle data sticker (or QR “Vehicle Data” label on newer …
How Much Does a New Battery for an Audi Cost? A new battery for an Audi typically ranges from about $250–$1,500+ in the United States, depending on whether you need a standard 12‑volt starter battery, a high‑performance AGM or lithium battery, or a high-voltage battery pack for an Audi e-tron or plug-in hybrid. The final …
What Type of Oil Does My Audi Q5 Take? Your Audi Q5 typically requires a full-synthetic engine oil that meets specific VW/Audi standards—most commonly VW 502 00 or VW 504 00—with a viscosity like 0W-20, 0W-30, 5W-30, or 5W-40 depending on model year and engine. To choose the correct oil, you must match both the …
How Much Does It Cost to Get a New Audi Key? A new Audi key typically costs between $250 and $750 in the United States, depending on the model, year, key type (standard remote vs. keyless “smart” key), and whether you go through an Audi dealer or a specialist locksmith. In some cases—especially for recent …
How Much Does It Cost to Replace an EGR Valve? Replacing an EGR (exhaust gas recirculation) valve typically costs between $250 and $800 in the United States, with most drivers paying around $350–$600 at a repair shop; the part usually runs from $80 to $400 and labor from $150 to $400, depending mainly on the …
What Size Is the Oil Drain Plug on a 2014 Audi S4? The oil drain plug on a 2014 Audi S4 (B8/B8.5, 3.0T V6) typically uses an M14x1.5 plug that is removed with a 19 mm hex socket, though exact specifications can vary slightly by pan design and market, so confirming on the vehicle or …
Symptoms of a Failing Oil Pump A failing oil pump most commonly shows up as a low oil pressure warning, noisy valve‑train or timing components (ticking/rattling), fluctuating or slow-to-build oil pressure, rising engine temperature, and in some vehicles, related fault codes. These signs indicate the engine isn’t getting enough pressurized oil, which can quickly lead …
What Size Battery Is in the Audi A7? The Audi A7 typically uses a 12‑volt AGM (Absorbent Glass Mat) starter battery in the 95–105 Ah range, plus, on many modern models, an additional 12‑volt auxiliary battery for start‑stop and electrical systems; exact capacity and dimensions vary by model year, engine, and equipment, so owners should …
What Happens When a Vacuum Pump Is Leaking Oil? When a vacuum pump is leaking oil, its performance, safety, and reliability are compromised: vacuum levels can drop, components can wear out prematurely, contamination risks increase, and in some cases the leak can become a fire, health, or environmental hazard. Understanding why oil leaks occur, what …
What Is the Best Oil to Put in an Audi? The best oil for most modern Audi vehicles is a fully synthetic engine oil that meets Audi/VW’s own specifications—typically VW 502 00, 504 00, 508 00, or their diesel equivalents—with a common viscosity of 0W‑20, 0W‑30, or 5W‑40 depending on the engine and model year. …
Where to Find the Cabin Air Filter on a 2017 Audi A4 The cabin air filter on a 2017 Audi A4 is located behind the glove box on the passenger side, accessed from the front of the dash rather than under the hood. In most trims and markets, you must lower or remove the glove …
Is the Audi S3 a Fast Car? The Audi S3 is objectively a fast car by modern standards, offering hot‑hatch acceleration, strong mid‑range performance, and high-speed stability that clearly place it above ordinary compact models, though it stops short of the extreme pace of dedicated performance flagships like the RS3 or AMG A45. Where the …
How Many Quarts of Oil Does a 2018 Audi S5 Need? A typical 2018 Audi S5 with the 3.0L turbocharged V6 (EA839) engine takes about 7.6 quarts (roughly 7.2 liters) of oil with a filter change, but owners should always confirm using the exact engine code and owner’s manual before servicing. Understanding the 2018 Audi …
What Kind of Oil Goes in a 2013 Audi A5? The 2013 Audi A5 requires high-quality synthetic engine oil that meets Audi/VW specification VW 502 00 (or VW 504 00 where applicable), most commonly in viscosity grades 5W-40 or 5W-30, depending on engine type and climate. In practical terms, owners should use a reputable full-synthetic …
Does a 2013 Audi A4 Have a Timing Belt or a Timing Chain? The 2013 Audi A4 uses a timing chain, not a timing belt. This applies to all standard U.S.-market 2013 A4 sedans with the 2.0 TFSI gasoline engine. Understanding why Audi uses a chain in this model—and what that means for maintenance and …
What Color Coolant Goes in an Audi? Modern Audi vehicles typically use pink/purple or light violet coolant that meets VW/Audi’s G12++, G13, or the latest G12evo specifications; green or universal coolants from generic brands are usually not appropriate unless they explicitly state VW TL 774 compatibility. The exact coolant type depends on model year and …
Why Many New Cars Have No Gas Cap Because many automakers now use capless fuel filler systems, new cars often lack a traditional screw-on gas cap; the spring-loaded internal seal reduces evaporative emissions, avoids “loose cap” check-engine lights, and makes refueling quicker and cleaner. In place of a removable cap, a sealed flap inside the …
How Much Does It Cost to Replace All 4 Brakes and Rotors? Replacing all four brakes and rotors typically costs between $600 and $1,600 for most passenger vehicles in the U.S., with economy jobs sometimes dipping to around $450 and high-end or performance setups exceeding $2,000. The final price depends on your vehicle type, parts …
What Type of Oil Does a 2014 Audi A4 Take? A 2014 Audi A4 generally requires full-synthetic engine oil that meets VW 502 00 specifications, most commonly 5W-40 in North America, though some markets and engines may use 5W-30 or other viscosities approved under the same VW standard. The exact oil type can vary slightly …
What Kind of Coolant an Audi Q3 Needs An Audi Q3 typically requires a VW-approved, phosphate- and silicate-free, OAT-based coolant that meets the Volkswagen/Audi G12++, G13, or newer G12evo specification, usually supplied as the official Audi/VW coolant (often pink/purple) and always mixed with distilled water at the ratio specified in the owner’s manual. Using the …
How to Tell If Your Audi Needs Coolant Your Audi may need coolant if the dashboard warning light comes on, the temperature gauge runs hotter than normal, the heater blows cold air, you notice visible leaks under the car, or the coolant level in the expansion tank drops below the minimum mark. Understanding these signs …