This page lists one drivetrain part for the 2025 Audi A1: a Differential Seal from ELRING, matched to both the 1.5L L4 Turbocharged and the 999cc L3 Turbocharged.
On the 2025 Audi A1, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware.
The 2025 Audi A1 was sold with both the 1.5L L4 Turbocharged and the 999cc L3 Turbocharged. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
The part number opens a page with every vehicle that part fits.
Differential Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING Fits: 1.5L L4 Turbocharged | 454820 | 🇲🇽 MX | Inside Diameter: 60.0 mmOutside Diameter: 74.0 mm | View on Amazon |
This table covers the seals at the Differential. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
This group shows a single part: ELRING 454820.
Buying Drivetrain Parts for a 2025 Audi A1
On this vehicle, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware.
- Match the engine first. Every drivetrain part here is engine-specific; each row shows which engine(s) it fits.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, replace the differential or transfer-case fluid with any axle or seal job while everything is already open.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Differential Seal .
Frequently Asked Questions
How many drivetrain parts fit the 2025 Audi A1?
This page lists one drivetrain part for the 2025 Audi A1: a Differential Seal from ELRING, covering both the 1.5L L4 Turbocharged and the 999cc L3 Turbocharged.
Do drivetrain parts differ between 2025 Audi A1 engines?
Yes. Every drivetrain part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of drivetrain problems on a 2025 Audi A1?
Common symptoms include clicking in tight turns, a clunk when shifting between drive and reverse, vibration that builds with speed, or gear oil on the inside of a wheel. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, replace the differential or transfer-case fluid with any axle or seal job while everything is already open.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2025 Audi A1 was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2025 Audi A1?
First match the engine — each row shows which engine(s) the part fits. Then a torn CV boot caught early is a cheap boot kit; caught late it is a whole axle — inspect before deciding which to buy. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2025 Audi A1
Drivetrain Parts for Other Audi A1 Years
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