Audi A3, S3, RS 3, 8V (USA)
Automatic transmission fluid capacity & service interval
Audi A3, S3, RS 3, 8V (USA) automatic transmission fluid capacity ranges from 3 to 7 liters. Service intervals include checks at 20000 miles or 24 months, and changes at 40000 miles or 80000 miles. The data covers 10 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| A3 40 TFSI (137 kW) (2018-2020) |
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| A3 45 TFSI quatro (170 kW) (2018-2020) |
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| RS 3 2.5 TFSI quattro (294 kW) (2018-2020) |
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| S3 2.0 TFSI quattro (215 kW) (2018-2020) |
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| RS 3 2.5 TFSI quattro (294 kW) (2017-2018) |
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| A3 2.0 TFSI (137 kW) (2016-2018) |
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| A3 1.4 TFSI e-tron (2015-2018) |
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Additional Notes
- The gap between initial fill and refill capacities across these configurations reflects the volume of fluid that remains trapped in the torque converter and internal passages after a drain. For example, the A3 1.8 TFSI quattro (125 kW) carries a 6.9-liter initial fill but only a 5.2-liter refill, meaning roughly 1.7 liters are retained in the unit during a standard service.
- The A3 1.4 TFSI e-tron (2015-2018) is the only configuration listed without a separate initial fill figure, showing only a 6-liter refill capacity. The absence of an initial fill value suggests the transaxle in the plug-in hybrid variant was not assigned a factory-fill specification in the same format as the other units.
- A Mechatronic Only capacity of 3-4 liters appears across several S Tronic-designated configurations, including the A3 1.8 TFSI quattro, A3 2.0 TFSI quattro (162 kW), and S3 2.0 TFSI quattro (215 kW) covering 2014-2018. The mechatronic unit is the integrated control module and hydraulic body of the S Tronic gearbox, and a partial fluid service targeting only that component requires significantly less fluid than a full refill.
- The RS 3 2.5 TFSI quattro (294 kW) carries the highest initial fill volume in the lineup at 7 liters, slightly above the 6.9-liter figure shared by most other configurations. The refill capacity of 5.5 liters also sits between the 5.2-liter and 6-liter refill values seen elsewhere in the range.
- All configurations share a fluid check interval of 20,000 miles or 24 months under normal use conditions. The time-based component of the interval means a check is due at whichever threshold is reached first, regardless of mileage accumulation.
- A fluid change interval of 40,000 miles applies to the majority of configurations, including all entries covering 2014-2018 model years. The A3 40 TFSI (137 kW), A3 45 TFSI quattro (170 kW), and S3 2.0 TFSI quattro (215 kW) in their 2018-2020 forms are specified at 80,000 miles, doubling the change interval compared to earlier or lower-output variants.
- The S3 2.0 TFSI quattro (215 kW) shows a direct specification shift between model year ranges. The 2014-2018 version carries a 5.2-liter refill, a Mechatronic Only capacity, and a 40,000-mile change interval, while the 2018-2020 version moves to a 6-liter refill, no listed Mechatronic Only figure, and an 80,000-mile change interval. The output rating remains identical at 215 kW across both entries.
- The A3 2.0 TFSI (137 kW) covering 2016-2018 and the A3 40 TFSI (137 kW) covering 2018-2020 share the same output rating and the same 6.9-liter initial fill and 6-liter refill figures. The change interval, however, differs: 40,000 miles for the earlier designation and 80,000 miles for the later one.