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Ultimate Automotive take great pride in offering their clients personalised, and friendly service at all times.
Conveniently located in Bonnyrigg, the business is a member of the Repco Auto Tech training program, ensuring their technicians are kept fully up to date with modern vehicle repair methods.
Ultimate Automotive have a wealth of experience in servicing all makes and models, including commercial fleet vehicles. As a Repco Authorised Service centre, they have a commitment to high quality workmanship, ensuring the very best in automotive care.


Get Your Car Holiday-Ready Before the Christmas Rush Spring has arrived in Bonnyrigg, bringing longer days, warmer weather and a sense of renewed energy. It’s also the perfect reminder to check in on your vehicle. After the cooler months, many cars are overdue for attention — and with Christmas fast approaching, now is the ideal time to get ahead of the rush and make sure your car is road-ready for the months ahead. Why Spring Servicing Matters Changing seasons can be hard on your vehicle. Coolant, oil and other fluids degrade over time, belts and hoses may crack, and batteries weakened by winter can fail when temperatures climb. Spring’s mix of warmer days and sudden downpours also highlights issues with wipers, tyres and brakes that may have gone unnoticed. Regular servicing at this time of year gives technicians the chance to inspect your car before minor problems become major ones. It also ensures that key systems — cooling, brakes, steering and suspension — are working at their best, giving you peace of mind for everyday driving and the extra kilometres many of us do around Christmas. The Spring Service Essentials A well-timed service should do more than just change the oil. It’s about giving your car a complete health check so it’s safe, efficient and reliable. During a spring service at Ultimate Auto Electrical and Mechanical Repairs in Bonnyrigg, the team can: Check the cooling system to make sure your radiator, hoses and coolant levels are ready for rising temperatures Test the battery and charging system so you’re not left stranded on a hot day with a dead battery Inspect brakes and suspension to keep you safe, especially if you plan to carry extra passengers or tow a trailer during the holidays Examine tyres and wheel alignment to improve safety and fuel economy, and ensure tyres are ready for wet weather and longer road trips Replace filters and worn belts to keep the engine running smoothly and avoid sudden failures Check lights, wipers and windscreen so visibility isn’t compromised when storms or late-summer glare hit These steps can make a big difference, not only to your safety but also to your fuel efficiency and driving comfort. Beat the Christmas Booking Rush It may feel early, but Christmas will be here before you know it. Workshops in Bonnyrigg and surrounding areas typically see a sharp rise in bookings from November onward. Leaving your service until the last minute risks missing out on an appointment, or worse, discovering a problem that can’t be fixed in time for your holiday trip. By servicing your car now, you can plan ahead, spread out costs if any repairs are needed, and avoid the stress of rushing to get your car ready just before the holidays. Local Weather Considerations According to the Australian Bureau of Meteorology (BOM), spring in Sydney’s west often brings a mix of warm, sunny days and sudden storms. Rising temperatures can quickly expose a weak cooling system, and stormy weather highlights the need for good tyres, brakes and wipers. Preparing your car for these conditions now means you can face whatever the season throws at you with confidence. The Benefits of Being Prepared A spring service is an investment in more than just reliability. A properly maintained vehicle delivers: Better fuel economy thanks to clean filters, correct tyre pressures and a well-tuned engine Increased comfort with air conditioning serviced before the first really hot days arrive Lower repair costs by catching small problems early rather than waiting for them to become breakdowns Peace of mind knowing your vehicle is ready for longer trips and busy holiday traffic Spring is about renewal, and your car deserves the same fresh start. Servicing now with Ultimate Auto Electrical and Mechanical Repairs in Bonnyrigg means fewer surprises, better performance and a stress-free lead-up to Christmas. Don’t wait for the December rush — secure your booking early, and enjoy the confidence of knowing your car is ready for whatever the season and the open road have in store...

Spring servicing in Bonnyrigg keeps your car safe, reliable and ready for summer holidays. Avoid the Christmas booking crush — book early and enjoy stress-free driving…

Spring Tune-Up in Bonnyrigg

This Competition is now closed. Thank you to everyone who took the time to enter! Win a share of over $8,000 in prizes with Ultimate Auto Electrical and Mechanical Repairs and Repco Authorised Service From 1 June to 30 September 2025, service your vehicle at Ultimate Auto Electrical and Mechanical Repairs and you can enter the Love Your Car promotion and win from a pool of exciting prizes. Prizes to Be Won 5 x $1,000 Repco Authorised Service vouchers
Redeemable at any participating Repco Authorised Service centre nationwide. 25 x $100 fuel gift cards
Perfect for your next road trip or daily drive. 5 x Supercars merchandise packs
Valued at $100 each.

Total prize pool valued at up to $8,100 including GST. How to Enter To participate: Book and complete a vehicle service at any Repco Authorised Service centre during the promotional period. Visit repcoservice.com  Tell us in 25 words or less why you deserve to win a Love Your Car prize. Upload your receipt Submit your entry online before 11:59pm AEST on 30 September 2025.

From 1 June to 30 September 2025, service your vehicle at a Repco Authorised Service centre and YOU could win big in the Love Your Car promotion

Love Your Car & Win

As a Repco Authorised Service centre, Ultimate Auto Electrical and Mechanical Repairs is sensitive to privacy issues on the Internet. We believe it is important you know how we treat the information about you we receive on the Internet. In general, you can visit without telling us who you are or revealing any information about yourself. Our web servers collect the IP addresses, not the e-mail addresses, of visitors. This information is aggregated to measure the number of visits, average time spent on the site, pages viewed, etc.  Repco Authorised Service uses this information to measure the use of our site and to improve the content of our site. There are times, however, when we may need information from you, such as your name and address. When information is needed, we will try to let you know at the time of collection, how we will use the personal information. Usually, the personal information we collect is used only by us to respond to your inquiry, process an order or allow you to access specific account information. Occasionally, we may make the e-mail addresses of  those who provide information available to other reputable organisations whose products or services we think you may find interesting. In these cases, you will be offered an opportunity to limit access to your information. If you register with Repco Authorised Service online, we may use this information to provide you with custom information about ourselves  which you have either asked for or require. A technology called cookies may be used to provide you with tailored information. A cookie is a tiny element of data that a website can send to your browser, which may then be stored on your hard drive so we can recognise you when you return. You may set your browser to notify you when you receive a cookie. At times, we conduct online surveys to better understand the needs and profile of our visitors. When we conduct a survey, we will try to let you know how we will use the information at the time we collect information from you on the Internet. The Repco Authorised Service website may contain links to other sites and sales affiliates. While we try to link only to sites that share our high standards and respect for privacy, we are not responsible for the content or the privacy practices employed by other sites. The Repco Authorised Service website and its affiliated websites may use cookies to collect some non-personally identifiable information to better target content to individuals in an effort to create a more relevant experience for each person and to provide aggregate reporting to advertisers and clients. This data cannot be traced back to any one user, it is anonymous. We may retain such information for up to two years. Aggregate reports generated from such information may be kept longer. The Repco Authorised Service website may also use Google Analytics data and the double click cookie to serve ads based on a user's prior visits across a range of websites on the Google network. To opt out of this use of your anonymous information on the Google advertising network visit www.google.com/ads/preferences/html/opt-out.html or to opt out of Google Analytics visit https://tools.google.com/dlpage/gaoptout. Please note that if you change your internet browser or delete all your cookies you will need to renew your opt-out.

Repco Authorised Service is sensitive to privacy issues on the Internet.

Privacy policy

Ultimate Auto Electrical and Mechanical Repairs is open for our normal working hours, ready to provide you with the expert car service you've come to expect. However, we'd like to reassure you that as a local, family business we are doing all we can to protect our customers, staff and suppliers in this unprecedented situation. We've made a number of adjustments to our business operations, based on the advice of the Australian Government and Health Authorities, so we can continue to provide you excellent customer service in the safest possible manner. While we've always maintained strong hygiene procedures, we've now increased the routine cleaning of surfaces across our reception area and workshop, and our technicians continue to use best hygiene practices, including the use of gloves and protective seat covers, with additional sanitisation of relevant surfaces undertaken before vehicle handover to owners. Plus, our team are committed to following best practice for health, hygiene, and personal distancing. In addition to these measures, we are further committed to providing options to our customers, including: Pick up and drop off services where possible Remote payment service via phone or online banking We'll meet you at your car in our carpark if you choose not to enter our reception area We are committed to do what it takes to ensure we can continue to provide you with the expert service you have come to expect in the safest possible way as well as ensuring the safety and livelihoods of our valuable team.
Thank you so much for your continued support and understanding as we navigate through this tough time for our customers, our business, and our team.
Rest assured we'll continue to monitor this situation closely and update our business practices as required to ensure that your family and ours is kept safe
We look forward to seeing you and your car soon.

We've made a number of adjustments to our business operations, based on the advice of the Australian Government and Health Authorities, so we can continue to provide you excellent customer service in the safest possible manner.

Your safety and wellbeing is always our top priority!

Our hearts are breaking as bushfires continue to devastate communities, with so many families throughout our beautiful country losing everything. Ultimate Auto Electrical and Mechanical Repairs are getting behind Repco's fundraising efforts to support the Australian Red Cross, who are just one of the many organisations assisting in disaster relief and recovery efforts. If you would like to make a monetary donation to support the Australian Red Cross you can at any one of the 500+ Repco parts stores across Australia, which will go towards supporting the thousands of people that have been displaced by these tragic fires.

Repco Authorised Service are getting behind Repco's fundraising efforts to support the Australian Red Cross, just one of the many organisations assisting in disaster relief and recovery efforts.

Support the Australian Red Cross

Did you know there is a cabin air filter in your car? Where is your cabin air filter? They are designed to remove a large amount of outside air pollutants and debris to keep you breathing easily when you drive.  And it is usually located in your glovebox. Talk to Ultimate Auto Electrical and Mechanical Repairs in Bonnyrigg today about your cabin air filter ! Just like your air-conditioning at home, the filters need to be checked at regular intervals and changed when it has done it's job. Replacing your cabin air filter is important to your health and your cars health too! The air outside your car can be polluted enough with smoggy city traffic or even dusty country roads, but research published in the Environmental Health Perspectives Journal shows that without an effective cabin air filter installed, the air inside your car can contain over 10 times more pollutants than the air outside.
This poor quality air can cause: Headaches Fatigue Poor concentration Migraines Nausea Asthma attacks Allergy Flare-ups Respiratory Infections "Cabin air filters are designed to filter out contaminants while  absorbing noxious odours and harmful gases like exhaust and ozone,"  explained Ryco Filters General Manager of Sales & Marketing, Ross Lamb. Cabin air filters become clogged over time and their effectiveness at protecting your health declines.  If you drive ‘Mum's Taxi', you might feel like you are always on the move - and a recent study into driving habits confirmed that parents with children aged 6-15 drive approximately 10% more than drivers without kids. And, the longer you spend in a vehicle with a Cabin Air Filter that needs replacing, the more you are at risk of health complications.  As well as healthier air - an effective cabin air filter means you get better fuel performance from your vehicle. A clogged cabin air filter will cause your air conditioner to work harder than it needs to and this means it uses more fuel and your air conditioning system is more likely to have a costly breakdown. At Ultimate Auto Electrical and Mechanical Repairs in Bonnyrigg we check your cabin air filter as part of our free 65 Point Vehicle Inspection report which you can request with every full car service.
For a more comprehensive check of your air condition system we recommend an air conditioning service.

Cabin air filter replacement is not only important to your car's health - it affects yours too.

Ultimate Auto Electrical and Mechanical Repairs

Cars are our passion.

Spring Tune-Up in Bonnyrigg

Love Your Car & Win

Privacy policy

Your safety and wellbeing is always our top priority!

Support the Australian Red Cross

Cabin air filters