Audi Q3 Battery: Specs, Fitment & Common Faults

On the Q3, a persistent drain has genuinely been traced to the dash control panel unit on related models, not an electrical short.

Generation covered: this guide is for the third-generation Q3 (F3, 2018–present), with particular focus on 2018–2023 registered examples now old enough for parts to be a common search. Check your logbook or VIN if you're unsure which generation you have.

Illustration for editorial purposes

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OEM Part Number: 000915105

Genuinely useful to know: Audi's current genuine battery part numbers follow a consistent pattern — 000915105 followed by a two-letter suffix that encodes the exact capacity and technology (e.g. "CE" = 92Ah AGM, "CF" = 105Ah AGM). Checking the suffix on your existing battery's label is a reliable way to confirm the exact replacement.

Standard AGM fitment	70Ah AGM, 760A (EN) — Type L3 (096)
Higher-demand variants (RS Q3, larger diesel)	92Ah AGM — suffix "CE"
Genuine part number format	000915105 + two-letter suffix — confirm the exact suffix via your existing battery's label or VIN

Audi Q3 Battery: The Part Everyone Blames First, Not Always Correctly

When a Audi Q3 won't start, the battery is the first suspect more often than anything else, and it's right often enough that checking it first is a reasonable move. It isn't always the actual cause though, which is worth knowing before paying for a replacement that solves nothing.

Before you buy: battery size, capacity and type (standard vs AGM/EFB for stop-start systems) vary by trim and engine. Always confirm against your VIN before ordering.

Audi Q3 Battery: What It Does

Starting the engine and running electrical systems whenever the engine isn't turning — that's the Audi Q3's 12V battery job. If it has stop-start, it works much harder than older designs, since the engine cuts out and restarts constantly, which is exactly why it needs a specific AGM or EFB battery rather than a standard one.

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A Genuinely Useful Piece of Context Worth Knowing About Persistent Drains — Audi Q3 Battery

If the battery keeps going flat despite everything appearing switched off, this is genuinely worth knowing: documented cases on related Audi models describe a persistent drain traced to the dash control panel unit itself rather than an electrical short or failing alternator, with replacing this specific component resolving the drain entirely.

A genuinely important finding worth knowing about the 48V mild hybrid system: alternator failure related to this system has been confirmed in the US with a seven-year extended warranty, though UK owners have found it difficult to get equivalent support from Audi UK for the same fault.

It's also genuinely worth knowing a useful diagnostic reading: a healthy trickle charge to the alarm typically measures around 0.03 amps, with anything notably higher pointing toward a genuine parasitic drain.

Audi Q3 Battery: Warning Signs, DIY Difficulty & Aftermarket Advice

These are the same regardless of make or model — see our full Battery Guide for warning signs to watch for, confirming fitment against your VIN, and matching the right technology (standard, EFB, AGM) when buying aftermarket.

More Audi Battery

The same part, covered across other Audi models.