Embarking on the world of car accessories can be both daunting and thrilling. It’s like playing a game where, with each level, you unlock and learn something different and this could be also applied to the world of car parts and accessories.

If you own a car, you will naturally start exploring its various parts and their functions. However, even if you don’t have a car but simply want to understand the purpose of each component as a car enthusiast, you’re on the right track. 

One way or another, you’re on the right track at learning to navigate the world of aftermarket parts and accessories, Mars Performance will make it easier for you to identify what you need.

Understanding The World Of Manufacturing

Let’s talk first about identifying the differences between the different models that companies used to produce, as each of these three varies in manufacturing process. 

Original Equipment Manufacturers (OEM) 

An OEM primarily produces and manufactures products according to the company’s specifications. In the automotive industry, manufacturers produce parts exclusively for the ordering brand, while car companies source components from OEM suppliers.

The same manufacturer that made the vehicle’s original components also produces OEM parts. Manufacturers design OEM parts to match the exact specifications of the originals, ensuring a perfect fit and reliable performance.

Original Design Manufacturer (ODM)

Focuses on designing and manufacturing products that other companies can rebrand and sell under their own name. The manufacturer designs the product’s design but allows companies to modify certain aspects. While the ODM handles production, the company that sells the product controls the branding. 

Original Brand Manufacturer (OBM)

An OBM handles everything—from design and production to branding and selling products under its own name. An OBM has full control and manages the entire process, including design, production, and branding.

As people own cars, automobile drivers pursue car upgrades to improve performance and aesthetics. As the need to customize cars rises, these trends create enormous opportunities for careers in the aftermarket industry.

Grand View Research, Inc. projects that the automotive aftermarket industry will grow at a CAGR of 3.8% from 2025 to 2030. The Australian Automotive Aftermarket Association (AAAA) reports that strong consumer demand for vehicle customization and performance enhancements drives growth in the aftermarket industry.

The Australian Government emphasizes the importance of regulatory compliance or else face the penalties of car modifications. Many modifications focus on enhancing exhaust sound, increasing speed, and improving appearance. However, car owners must follow regulations, as regional regulatory authorities monitor standards and assess the environmental impact of automotive components. 

As the International Trade Administration notes the growing number of vehicles and the increasing consumer demand for aftermarket products, it’s important to recognize the differences between car parts and car accessories to make an informed decision and navigate your options openly on what you need and want when upgrading and enhancing your car.

What is Aftermarket?

The aftermarket is the automotive industry’s secondary market where vehicle owners can buy spare parts, accessories, performance upgrades that are not produced by the original car manufacturer (OEM – Original Equipment Manufacturer).

Aftermarket allows the car owners to have flexible choices that are beyond OEM options and factory specifications, offering low-cost and customizable parts. When modifying or upgrading a car, enthusiasts often explore aftermarket car parts and accessories. But what's the difference? Now, let’s also differentiate car parts and car accessories in the aftermarket.

Aftermarket Car Parts 

Aftermarket car parts, also called non-OEM parts, are functional components that replace or improve OEM (Original Equipment Manufacturer) parts. Vehicle owners use aftermarket parts to replace damaged components and enhance performance, durability, and efficiency beyond stock factory parts. 

Aftermarket Car Accessories

Aftermarket car accessories are products that vehicle owners add after the manufacturer (OEM) releases the car to improve its appearance, comfort, convenience, and functionality. These accessories are not essential for the car to run but significantly enhance personalization and upgrades, allowing it to better suit the owner and showcase their personal style.

Additionally, they're perfect for drivers who want to stand out, make their car more comfortable, or add modern tech and luxury features not included in the stock version.

Types of Aftermarket 

While both fall under the aftermarket category, they serve different purposes and mostly break down into three main categories: one focuses on improving performance, another replaces existing parts, and the other enhances aesthetics and comfort

Performance Parts

Performance parts enhance a vehicle’s overall power, handling, speed, and efficiency. Additionally, they add more power and improve efficiency when installed on your vehicle. Car enthusiasts often use them to upgrade factory limitations or prepare a vehicle for track use, off-road driving, or towing applications.

Replacement Parts

Replacement parts are designed to restore your vehicle’s original performance by replacing worn-out, damaged, or faulty OEM components. They’re essential for general vehicle maintenance and repair.

Accessories

Aftermarket accessories are optional add-ons that improve your vehicle’s appearance, comfort, convenience, or functionality. These may include custom wheels, upgraded audio systems, dash cams for safety, aerodynamic enhancements, and spoilers. While they don’t directly affect how your car runs, they offer a more personalized and enjoyable driving experience.

When describing car parts and components, take your time and go as in-depth as possible. Explore both exterior and interior accessories to find the right upgrades for your vehicle. This includes everything from body kits and lighting to interior trims and tech add-ons—whatever you want to personalise your car.

Benefits of Aftermarket 

There are a lot of great reasons why car enthusiasts go for the aftermarket, and one of the main reasons is that it allows customization to the car. Aftermarket allow vehicle owners to go beyond factory limitations and truly tailor their ride to meet specific driving needs, aesthetic preferences, or functionality goals.

With many options available for aftermarket car parts and accessories, and whether you're looking to enhance performance, modernize your interior, or upgrade lighting, aftermarket products provide flexibility, variety, and often better value than OEM parts.

Key Benefits:

• Cost-Effectiveness: First and foremost, it is pocket-friendly. Many aftermarket parts offer the same or better quality than OEM at a more accessible price point. But always check the difference—if the price they offer seems too good to be true, then you must reconsider buying it.
• Wider Selection and Availability: Unlike OEM parts limited to factory designs, aftermarket offers a vast range of options in style, fitment, and finish. In addition to that, aftermarket parts are available everywhere—at your local auto shop, online, or even in your neighborhood.
• Personalization: From custom wheels to body kits, aftermarket let us express our individual style and add a personal touch to our car.
• Upgraded Functionality: Aftermarket products push boundaries as they add features not included in stock models, such as dash cams, infotainment systems, or LED lighting that our car might need.

How to Choose the Right Aftermarket Parts for Your Vehicle

Upgrading your vehicle and choosing the right parts can feel overwhelming. It isn’t just about fitment—it’s about meeting performance objectives, ensuring compliance, and maintaining vehicle integrity. Here’s what you need to consider:

1. Purpose – What’s the reason for choosing aftermarket parts? Is it an upgrade for performance, replacements, or aesthetic purposes?
2. Vehicle Compatibility – Always ensure your aftermarket parts are compatible with your car’s make, model, and year.
3. ADR Compliance (Australia) – Make sure lighting, exhaust, and suspension modifications meet legal standards.
4. Brand Reputation – Always read reviews to evaluate the quality and performance of parts. Choose suppliers known for durability, support, and proven track records.
5. Installation Needs – Some parts require professional fitting. Assess your tools, skill level, and workshop capability, and don’t hesitate to consult a professional mechanic to install your aftermarket car parts or accessories.

Common Mistakes to Avoid When Buying Aftermarket Car Parts

Even professionals can run into trouble when they make the wrong assumptions. So for smarter purchases in the future, here are the most common pitfalls:

Mistake #1: Choosing Based on Price Alone

Failing to compare prices from different sellers can result in overpaying for car parts—or worse, paying for cheap parts that compromise material quality, precision, or safety. Take your time when choosing car parts and accessories—there’s no racing to it. Shop around, from online to in-store, to find the best price without sacrificing quality.

Mistake #2: Ignoring Compatibility

Not all “universal” parts are truly universal. Always double-check part numbers, dimensions, and compatibility before making a purchase. Misfit parts waste time and money—it’s better to stay informed than waste your time.

Mistake #3: Overlooking Local Regulations

In Australia, different regions follow different ADR standards, and knowing them is a must before upgrading your mods. Exhaust systems, lift kits, and lighting mods often fall under strict compliance rules. These must meet ADR standards or risk defect notices. Failure to comply can lead to penalties that cost you time, money, and even your license to drive (oh no!).

Mistake #4: Skipping Research on Brands

Always check reviews, warranty terms, and installation instructions before placing an order. Don’t be careless—make sure to verify the quality of the car parts and accessories before buying. It’s much better to purchase from authorized dealers, well-established online suppliers, or trusted local auto parts stores.

Mistake #5: Not Seeking Professional Advice

This might be the worst mistake of all—buying car parts and accessories without seeking professional advice, especially if you have no idea what they’re used for. Having proper knowledge and experience is a must when buying. If you don’t have it, ask a professional mechanic or reach out to car enthusiasts through online communities. It’s better to ask than pretend you know and end up regretting it.

Buying car parts and accessories is both time-consuming and potentially expensive, so avoiding these kinds of mistakes will save you in the long run. Having knowledge isn’t about bragging—it’s about being a smart purchaser. Invest time in learning and buying wisely, and I'm sure you’ll get the car upgrade you truly want.

Where to Buy Aftermarket Parts

Aftermarket parts are widely available both online and at local auto shops. However, buying from a reputable supplier is just as important as choosing the right part. Here are trusted buying channels:

1. Local Mechanics/Workshops – Great for sourcing and installing performance upgrades. The best part here is that if you prefer to inspect products in person, you can go to a local shop and check if they have the parts you need. Sometimes, the downside of a local shop is that it may have a limited selection.
2. Online Retailers – Ideal if they offer vehicle filters, verified fitment, and clear product specs. Online retailers are the best option, especially when you don’t have time to check in-store. Mars Performance offers free shipping on products, making it easier and more affordable to purchase parts—plus paint and installation services you wouldn’t get from most online retailers.
3. Auto Shows or Trade Events – These events provide a unique opportunity to see the newest products, technologies, and innovations in the automotive industry. The best part is that you can network with industry professionals, attend workshops and seminars, and gain insights from experts. So, check your area to see if any events are happening nearby.

Make Mars Performance Your Trusted Aftermarket Car Parts Source

At Mars Performance, we have almost a decade of experience supplying the right aftermarket car parts for car enthusiasts all over the world. We offer competitive prices for parts and accessories, with a wider selection of aftermarket parts for various models—may it be a Ford Ranger, BMW, Toyota, Honda, Holden, Land Rover, and many more—so whatever model you have, we have it.

As an OBM, we control the full process—from design to distribution—ensuring high-quality aftermarket parts specifically tailored for Australian roads and vehicles, designed for almost any enthusiast vehicle you can think of.

If you’re ready to upgrade your vehicle and are typing at Google looking for ‘aftermarket accessories near me’, check out Mars Performance’s aftermarket car parts selection today.