How much transmission fluid does a 2018 Audi A3 take?

6.3 quarts as a total fill for the 0GC transmission. A drain-and-refill without removing the pan replaces roughly a third to half of that, so refill to the level check point rather than pouring in the whole figure.

What transmission fluid does a 2018 Audi A3 use?

The source lists only a catalog code for this year, not the OEM specification, so use the fluid named in your owner's manual or on the dipstick.

What brake fluid does a 2018 Audi A3 take?

Check the brake fluid reservoir cap - it states the DOT grade. DOT 3 and DOT 4 can be mixed; DOT 5 silicone fluid cannot.

2018 Audi A3 transmission fluid capacity and fluid specs

GarageDex's fluid data shows the 2018 Audi A3 uses the 0GC automatic transmission, which holds 6.3 quarts of fluid as a total fill.

Shop transmission fluid Match the specification on the bottle to your manual

Key takeaways

Transmission: 0GC automatic transmission, 6.3 qt total fill.
Total fill is the whole system; a drain-and-refill takes a third to half.
Brake fluid grade: read it off the reservoir cap.
Fluid specification is not named by the source - use the owner's manual.

2018 Audi A3 fluids by engine
Engine	Transmission	Total fill	Fluid spec	Brake fluid	Gear oil
2.0L 4-cyl	0GC automatic	6.3 qt	per owner's manual	see reservoir cap	-

Fluids for the 2018 Audi A3

Buy fluid that states the specification your manual names. Multi-vehicle fluids list the specs they meet on the back label - if yours is not listed, it is the wrong bottle.

Transmission fluidYou need about 7 quarts for a full fillShop fluid DOT 3 or DOT 4 brake fluidA quart covers a full flushShop brake fluid Fluid transfer pumpMost modern transmissions have no dipstick tube - you fill from belowShop pumps

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Other 2018 Audi A3 specs

All specs Engine oil Maintenance schedule

Other A3 years

2017 2016 2015 2013 2012 2011 2010 2009 2008 2007 2006

Source: World's Best Oil (AMSOIL dealer cross-reference). Capacities are total system fills; a drain-and-refill takes less. Where no fluid specification is shown, the source lists only a catalog code, so use the specification printed in your owner's manual - the wrong transmission fluid damages a transmission.