Had an issue with

Sixt

? Get a real response.

Disputing a charge or service issue with Sixt Australia? The fastest route is a written email to Customer Relations — it starts Sixt's formal response clock and keeps a paper trail. Gather your evidence first, then pick the channel below.

Before You Start: Gather Your Evidence

• Collect your booking/reservation number, rental agreement, and final invoice.
• Save pickup and drop-off photos and videos, plus any emails and screenshots.
• Decide the outcome you want: a refund, charge reversal, fee correction, re-inspection, or written explanation.

Email (Recommended — Starts the Formal Clock)

• Email customerservice@sixt.com.au with a clear subject line, e.g. "Formal complaint — disputed damage charge — booking #XXXX".
• State what happened, the outcome you want, and request a case/reference number.
• Keep one email thread so the full history stays together.

Phone Sixt Customer Relations

• Call 1300 284 752 or +61 2 8337 2991; central reservations is 13 74 98.
• Note the agent's name and your reference number.
• Follow up by email the same day so there's a written record.

Online Feedback Form

• Submit via the official Sixt Australia FAQs & Feedback page.
• The same channels are listed on the Sixt Australia Contact page.

Once Sixt logs your complaint, Customer Relations confirms receipt in writing with a reference number. Most matters get a response within five business days, though damage and insurance disputes can take longer.

• Acknowledgement: Customer Relations logs the complaint and sends written confirmation with a reference.
• Timeline: Sixt "aims to investigate and respond within five (5) days of receipt"; complex matters such as damage assessments may take longer, with notification to you.
• Who handles it: Customer Relations / Customer Service manages initial complaints; damage and insurance disputes route to a separate Claims/Damage department.
• Communication: Primarily email and phone — written email follow-up is the most reliable documented channel.
• Code commitment: Sixt is an AFIA Fleet & Rental Division member and adheres to the AFIA Car Rental Code of Practice.

If your refund or billing dispute stalls here, you can escalate it further or move to industry conciliation — see the escalation section below.

These are the recurring issues Sixt customers raise across ProductReview.com.au (1.7/5 from 570+ reviews) and Trustpilot.

Disputed Damage Charges

• Post-rental damage charges applied weeks after return, sometimes for pre-existing scratches.
• Customers billed for a full panel respray when a cheaper repair would suffice.
• Limited reply or re-inspection offered before the charge is processed.

Voided Excess Protection

• "Zero Excess" or full protection voided after minor incidents.
• Large loss assessments raised despite a customer holding paid protection.

Fuel and Cleaning Fees

• Unexpected fuel charges with an undisclosed or unclear fuel policy.
• Cleaning fees of roughly $250–$290 for an alleged smoke smell, disputed by non-smokers.

Service and Pricing Issues

• Slow or unresponsive customer service, with calls routed to overseas centres.
• Long airport pickup waits (for example, around 1h40m at Perth).
• Discount codes not applied as advertised at booking or billing.