Collection: Audi

Audi Parts That Keep the Drive Feeling the Way It Should

An Audi is supposed to feel tight — precise steering, a cabin that shuts out road noise, Quattro grip when the weather turns bad, and a turbocharged engine with real pull in the mid-range. All of that comes from genuinely sophisticated engineering, and it's exactly why a part that's merely "close enough" tends to show up as a problem rather than a fix. Our Audi parts collection covers the repairs Audi owners run into most, from timing chain components and oxygen sensors to axles, wheel bearings, blower motors and brake wear sensors, and we're continually sourcing more.

Audi shares a lot of engineering with Volkswagen, SEAT, Skoda and, further up the range, Porsche. That's genuinely useful information when you're parts-shopping, because it widens what's available and often keeps cost down — but only if you know how to use it correctly, which this page will walk through alongside what actually wears out on an Audi and how to match parts properly.

What Actually Wears Out on an Audi

Start with the engine, because Audi's turbocharged four-cylinders — the 1.8 and 2.0 TFSI engines found across the A3, A4, A5, Q3 and Q5 — are known for timing chain tensioner wear on earlier versions. The telltale sign is a rattle lasting a few seconds right after a cold start, which gets written off as "normal" by a lot of owners until it isn't. Oxygen sensors are another frequent replacement, usually showing up as a check engine light and a drop in fuel economy before anything else goes wrong.

Quattro all-wheel drive means the axles and wheel bearings work harder than on a front-drive-only car, and it shows in how often CV axles and front wheel bearing assemblies come up for replacement, particularly on SUVs like the Q5 and Q7 that carry more weight. Cooling system parts are a known weak point too — a lot of Audi engines use plastic thermostat housings and water pump bodies that get brittle with heat cycling and eventually seep coolant, usually announced by a faint sweet smell after a drive or a slowly dropping coolant level.

Brakes bring their own quirk: Audi pads use electronic wear sensors that need replacing with every pad change, and skipping that step is the single most common reason a brake warning light stays on after a "complete" brake job. Climate parts like blower motors wear the way they do on any car, just with the added step on some models of fan speed control through a separate resistor or module rather than a simple switch.

Matching Parts to Your Exact Audi

Audi fits different brakes, suspension and even lighting to the same model depending on trim and factory options, which are tracked as PR codes on a sticker in the spare wheel well and in the service book.

What to check	Where to find it	Why it matters
Chassis code (B8, B9, 8V, C7, etc.)	Decoded from VIN or known by generation	Generations share a model name but rarely share parts
Engine code	Stamped on the block or on the service sticker	Separates 1.8T, 2.0T, 3.0T and TDI parts
PR codes	Sticker in the spare wheel well	Identify brake size, suspension type and other factory options
Part number	Printed on the original part	The surest way to confirm an exact match
VIN	Windshield, door jamb, registration	Decodes the full build and resolves any doubt

If you're not sure which brake size or engine code applies, send your VIN through our contact page and we'll confirm it before you order.

OEM or OE-Spec Aftermarket for an Audi

Dealer pricing on Audi parts adds up fast, and plenty of owners look for a more sensible way to keep the car running right without cutting corners on quality.

	OEM	OE-spec aftermarket
Fit	Guaranteed factory match	Good when it's genuinely built to OE specification
Cost	Highest, especially at a dealer	Often considerably lower
Best for	Coded electronics, safety modules	Timing components, sensors, axles, cooling parts, brake parts
Where to be careful	N/A	Skip unbranded parts with no OE cross-reference

For wear items like timing chain kits, oxygen sensors, axles, wheel bearings and cooling parts, a well-built OE-spec aftermarket part can be a genuinely cost-effective alternative to a dealer part, without any real compromise in quality. Where I'd lean toward genuine or a well-documented OE-spec equivalent is anything that needs coding or calibration with the car's electronics after installation — certain sensors, control modules and safety systems — since getting that wrong causes more hassle than the money saved is worth.

How to Buy the Right Audi Parts

1. Get your chassis code. B8, B9, 8V, C7 and similar codes matter more than the model name alone.
2. Confirm your engine code. It decides timing parts, mounts and several sensors even within one chassis.
3. Check your PR codes for brake and suspension parts. The same A4 can have several different front brake sizes depending on options.
4. Match the part number on your old component. It's the most reliable way to avoid a return.
5. Check whether a Volkswagen Group part applies. It often does, and it can save real money — more on that below.
6. Plan for coding where needed. Some electronic parts need a VAG-compatible scan tool after installation.

Understanding Audi's Engines

1.8 and 2.0 TFSI (EA888): turbocharged four-cylinders used across most A3, A4, A5, Q3 and Q5 models. Early generations are the ones most associated with timing chain tensioner wear, which is why so many owners replace the tensioner, chain and guides proactively rather than waiting for a failure.

3.0 TFSI: a supercharged V6 found in S4, S5, A6, A7, Q5 and Q7 models. Strong and smooth, but keep an eye on water pump and thermostat housing leaks as the miles add up.

2.0 and 3.0 TDI: diesel engines with excellent torque and efficiency. Injectors, glow plugs and emissions-related parts are the common service items here.

Your engine code, stamped on the block and shown on the service sticker, is the detail that makes finding the right part straightforward instead of a guessing game.

Audi Parts by Model

A3, S3 and TT

The compact end of the lineup, sharing most of its mechanical bones with the Volkswagen Golf and GTI. Ignition coils, PCV valves, and water pumps with plastic housings are the recurring items, along with blower motors on cars with a few winters behind them. Rear brake pads on models with an electronic parking brake need the caliper motor retracted with a scan tool before the pistons can be pushed back, which catches some DIY owners off guard the first time.

A4, A5 and Q5

The core of the range, built on the B8 and B9 platforms depending on year. Timing chain tensioners on early 2.0 TFSI engines, front control arm bushings, and thermostats are the most common replacement items. Oil consumption on some of these engines traces back to the PCV system rather than anything more serious, and it's worth checking before assuming the worst.

A6, A7 and Q7

Bigger, heavier, and in some trims equipped with air suspension — struts and the compressor are wear items here the same way they are on other air-sprung cars. The supercharged 3.0 TFSI's drive belt and coolant pipes are common service items, along with valve cover gaskets on higher-mileage examples.

Quattro models generally

All-wheel drive means CV joints, boots and wheel bearings see more load than on a front-drive-only car, and the transfer case or Haldex fluid needs servicing on a schedule that's easy to overlook since there's nothing to see from the outside.

Audi and Volkswagen Group Parts Sharing

This is worth understanding properly because it can save real money. The A3 and the Golf share a platform. The Q3 and the Tiguan are close relatives. The TT and the Golf GTI share a lot of hardware, and the Q7 is mechanically related to the Touareg and, further up, the Porsche Cayenne. On wear items — timing components, sensors, cooling parts, suspension bushings — a part listed under the Volkswagen name can be the exact same component, sometimes at a friendlier price. The part number is what actually confirms it, not the badge on the parts catalog. Where this stops applying is Audi-specific trim, certain interior electronics, and quattro-specific driveline hardware that Volkswagen's front-drive models never had. Browse Volkswagen parts alongside this collection if you're trying to track down a shared component.

Audi Parts Glossary

• Quattro: Audi's all-wheel-drive system, used across most of the lineup in some form.
• TFSI: turbocharged, direct-injected petrol engines.
• TDI: turbocharged diesel engines, known for strong torque and efficiency.
• PR code: a factory option code identifying equipment like brake size or suspension type.
• EA888: the engine family behind most 1.8 and 2.0 TFSI engines.
• MQB / MLB: Volkswagen Group platforms shared across many Audi and VW models.

Audi Parts FAQ

How do I know if my timing chain tensioner is wearing out?

A rattle for a few seconds right after a cold start is the classic sign, sometimes paired with a cam correlation fault code. Worth addressing early rather than waiting for it to get worse.

Do Volkswagen parts actually fit my Audi?

Often, yes, on shared engines and platforms. Match the OE part number rather than assuming by badge, and check Volkswagen parts as well.

Why does my Audi use oil between changes?

A failed PCV valve or diaphragm, worn valve stem seals, or piston ring wear on some 2.0 TFSI engines are the usual causes. Start with the cheap check — the PCV valve — before assuming anything more serious.

Do I need a scan tool to change rear brake pads?

On models with an electronic parking brake, yes. The caliper motor has to be retracted before the piston can be pushed back, and some tools also reset the pad wear warning.

Why did my brake warning light stay on after new pads?

The wear sensor was probably reused instead of replaced. Fit a new one with every pad change.

Can you find parts for an older A4, like a B6 or B7?

Yes, we're expanding coverage. Send your VIN through request a part and we'll go looking.

Do you ship Audi parts outside the US?

Yes, worldwide. Check our shipping page for delivery details.

Why Buy Audi Parts From Easy Life Auto Parts

Every listing carries the OE part number, including the Volkswagen cross-reference where one genuinely applies, so you're comparing like with like before you order. Not sure about your chassis or engine code? Our contact page gets you a real fitment check. We ship worldwide with tracking on our track order page, our warranty and returns pages explain your coverage plainly, and our FAQ covers the questions we hear most. Missing a part? Request a part and we'll source it for you.

Round out a repair with our engine parts and brake parts collections. For the brand's history, see Audi on Wikipedia.

Vorsprung durch Technik deserves parts that live up to it. Match by chassis code and engine, and your Audi will feel the way it was built to feel.

How Climate Affects an Audi

Where an Audi spends its life changes what wears out first, sometimes more than mileage does. In hot climates, cooling system parts — the water pump, thermostat housing and coolant hoses — work harder and fail sooner, and AC compressor issues show up more often as the system runs for longer stretches each year. In cold, wet or salted regions, suspension bushings, brake lines and exhaust components corrode well before the mechanical parts underneath are actually worn through, and rubber seals on turbo plumbing can stiffen and crack faster in repeated freeze-thaw cycles. In humid climates, electrical connectors and sensors are more prone to the kind of moisture-related faults that mimic a bigger problem than what's actually there. None of this means Audis are delicate — it just means the maintenance schedule in the owner's manual is a baseline, not a ceiling, and driving conditions should factor into when you get ahead of a wear item instead of waiting for it to fail.

Keeping Your Audi Running Like It Should

• Use oil that meets the VW/Audi-approved specification for your engine (for example VW 502 00, 504 00 or 508 00) — the wrong oil spec genuinely matters on these engines, more than on a lot of other brands.
• Listen for a cold-start rattle on TFSI engines and address it early rather than hoping it goes away.
• Check coolant level monthly; slow leaks from plastic cooling components are common and easy to miss until the warning light comes on.
• Replace spark plugs and ignition coils at the recommended interval on turbo engines, since misfires under load are often tied to one or the other.
• Service the DSG/S tronic or Tiptronic transmission on its scheduled interval rather than treating it as lifetime fluid.
• Inspect control arm bushings and wheel bearings at every tire rotation, especially on quattro models carrying extra driveline weight.

Audi Parts Buying Checklist

1. Have your VIN, engine code and chassis code ready before you start shopping.
2. Check the PR codes for brake and suspension parts specific to your options.
3. Match the OE part number on the listing to your old part.
4. Check whether a matching Volkswagen Group part is available and priced better.
5. Order single-use hardware — axle bolts, gaskets, wear sensors — at the same time as the main part.
6. Plan for coding or adaptation on anything electronic.

Common Audi Repairs, Explained Simply

A handful of jobs account for most of what Audi owners come to us for. A cold-start rattle that disappears after a few seconds is almost always the timing chain tensioner on an early 2.0 TFSI — not an emergency today, but worth scheduling. A check engine light with reduced fuel economy points first at an oxygen sensor, then at the mass airflow sensor if the O2 sensor checks out fine. A faint sweet smell after driving, paired with a slowly dropping coolant level, is the water pump or thermostat housing more often than the radiator itself. A clicking sound when turning, especially on a bumpy road, usually means a CV joint on its way out. And a brake warning light that won't clear after a pad change almost always means the wear sensor got reused instead of replaced. Knowing the pattern ahead of time saves you from buying the wrong part, or three of them, before landing on the right one.