The A$21 billion fight for your mechanic's first call

Sector analysis: Australian automotive aftermarket

Photo: @danica_lucia_

Every morning, thousands of workshop mechanics across Australia make the same decision: who do I call first for parts?

A phone call. A few taps on an app. A quick drive to the nearest branch. It looks like a small decision. But aggregated across nearly 28,000 workshops, 365 days a year, it determines who wins and who loses in a $21.5 billion industry most people have never thought about.

Three companies are making fundamentally different bets on how to win that call. One is spending its way to scale. One is trying to integrate its way out of a crisis. And another company, sitting in the same industry code but playing a completely different game, has 58% gross margins, and Toyota delivering vehicles with its products. The thing that separates the winners from the losers isn’t what you’d expect.

It’s not price.

Callouts

The first-call structure is the game

Workshops rank two to four suppliers by priority. The number-one supplier captures 50 to 70% of spend. Number three captures almost nothing. Rank is driven by availability, speed, and relationship, not price. Every strategic move in this industry should be evaluated against whether it changes the rank order.

Digital platforms are formalising loyalty

NAPALink, EzyParts, and similar tools are turning the informal “first call” into a structured digital relationship with real switching costs. The winner in trade ordering platforms could lock in workshop loyalty at scale, turning a fragmented relationship market into a platform business.

Vehicle complexity is creating new gatekeepers

ADAS calibration is required after common repairs. The workshop that can’t handle it loses work to dealers. GPC is the only player building a national aftermarket calibration capability. First-mover advantages in technical services compound.

The industry hiding in plain sight

The Australian automotive aftermarket, parts, tools, and services for vehicles after they leave the factory, is quietly enormous. $21.5 billion in wholesaling. $7.1 billion in retailing. Growing steadily as the national fleet ages (average age now 11.4 years) and becomes more complex with every new safety and efficiency system bolted on.

It’s also one of the most structurally fragmented industries in the country. Over 80% of the wholesale market belongs to independent operators, businesses with fewer than 20 employees, often family-owned, serving local workshops through relationships built over decades. The three largest players collectively hold less than 20% of wholesale.

That fragmentation is the defining strategic fact. It means consolidation is coming. It also means consolidation is hard, because the relationships that drive trade loyalty are personal, local, and stubborn. You can buy a competitor’s business. You can’t buy their customers’ trust.

Two distribution bets and one product outlier

GPC Asia Pacific is betting on global scale. Backed by a US$24.3 billion NYSE-listed parent, GPC is the best-resourced player in the market by a wide margin. A 39,000-square-metre automated distribution centre in Broadmeadows. Multiple acquisitions in eighteen months, including Auto Parts Group and ADAS Solutions. Consolidation of acquired trade brands under the global NAPA identity. The bet: capital plus procurement leverage plus infrastructure equals market leadership.

Bapcor is betting on integrated specialist breadth. Bapcor owns a portfolio that no competitor matches: Burson for general trade, JAS for auto electrical, AAD for brake, clutch, and suspension products, Truckline and Diesel Distributors for heavy commercial vehicles. A workshop that needs a set of brake pads and a specialist truck sensor should, in theory, be able to source both from one relationship. The bet: breadth creates loyalty. The problem: five leadership transitions in two years and an integration that remains more theory than reality. ERPs are down from 42 to 19 with a roadmap to 15 by FY2026. What’s changed: new CEO Chris Wilesmith brings a career built on retail operations and customer experience at Supercheap Auto and Jaycar, the first Bapcor leader who understands how to line up an organisation from the back to deliver value at the front.

And then there’s ARB Corporation, which isn’t really in the same fight at all. While GPC and Bapcor compete over who gets the brake pad to the workshop fastest, ARB designs, engineers, and manufactures the bull bars, suspension systems, and touring gear that 4WD owners pay A$3,000 to $10,000+ to have fitted. Different customer, different job, different economics, and 58.6% gross margins to prove it. ARB’s 120 engineers design airbag-compatible, ADAS-integrated accessories in Kilsyth, Victoria. Its 74 branded stores control the fitment experience. And Toyota and Ford now design factory vehicle trims around ARB products, with the ARB logo staying on the bumper. The bet: a product and brand moat built over 50 years of engineering beats distribution scale in a market where the customer’s job isn’t repair, it’s aspiration.

Why the first call matters more than price

Here’s the thing the market consistently undervalues about this industry: it’s a relationship business with a very specific structure.

Most workshops maintain two to four preferred suppliers, ranked by priority. The first-call supplier gets 50 to 70% of the spend. The second gets 20 to 30%. Everyone else fights over scraps. Share of wallet follows rank order. Being number one in a workshop’s supplier list captures disproportionate value. Being number three captures almost nothing.

What drives rank order? In descending importance: availability (do they have the part?), speed (how fast can I get it?), range (can they handle my unusual requests?), relationship (do I trust the person?), and last, price. It’s a mental availability game. Which supplier comes to mind when the mechanic needs a brake pad for a 2019 Hilux at 9 am? The supplier who occupies more of those moments in memory captures disproportionate spend.

Price is last. This matters.

It’s why Bapcor’s strategy of cutting prices to regain market share is solving the wrong problem. The workshops that left during the turnaround didn’t leave because Bapcor was expensive. They left because stock went missing during warehouse consolidation, deliveries became unreliable during logistics restructuring, and their trusted rep moved on. Offering a discount to a customer you’ve already let down is like a restaurant offering half-price meals after poisoning the water.

Four forces that change the game

Underneath the competitive dynamics, four structural shifts are quietly redrawing the playing field.

Vehicle complexity is creating new gatekeepers. Every car sold today has features that didn’t exist a decade ago: adaptive cruise control, emergency braking, and lane-keeping assist. These ADAS systems require recalibration after common repairs. The workshop that can’t handle ADAS loses work to dealers. GPC is the only player building a national aftermarket calibration capability through its ADAS Solutions acquisition. That’s a genuine first-mover position and the kind of structural advantage that compounds.

Electrification is slowly reshaping demand. EVs reduce the need for traditional wear parts like exhausts, ignition components, and engine oil, but create demand for battery systems, electric motor components, and high-voltage cabling. The timing is gradual. EVs reached 13% of new sales in 2025 but remain under 3% of the total fleet. The directional shift is clear. The wholesalers who build EV technical credibility early will lock in the next generation of workshop loyalty. Everyone else will be playing catch-up in a market that’s already moved.

OEM dealers are quietly recapturing aftermarket work. As vehicles become more complex (ADAS, high-voltage systems, and software-dependent drivetrains), OEM dealers have a natural advantage: proprietary diagnostic tools, manufacturer training, and warranty coverage that independent workshops can’t match. Right to Repair legislation is supposed to level the playing field, but the technical gap is widening faster than regulation can close it. For the aftermarket wholesalers, this is the silent competitor: every job an independent workshop loses to a dealer is a parts order that never gets placed.

Digital platforms are formalising the first call. Tools like GPC’s NAPALink and Bapcor’s EzyParts are digitising the trade ordering process: VIN scanning, real-time stock visibility, and integrated labour estimates. Once a workshop builds NAPALink into its daily workflow, switching carries real friction. The digital platform may ultimately determine first-call status more durably than any personal relationship. The implications are significant: the winner in digital trade ordering could lock in workshop loyalty at scale, turning a historically fragmented, relationship-driven market into something that looks more like a platform business. But nobody has taken the next step. Industrial distributors like Fastenal and Grainger already manage their customers’ inventory, predicting when stock runs low and auto-replenishing before the customer places an order. In the aftermarket, the workshop stops ordering. The supplier becomes the default. Neither GPC nor Bapcor has built this yet. Whoever does will convert a digital ordering tool into structural lock-in and make the first call obsolete entirely.

Category dynamics

The aftermarket isn’t one market. It’s a portfolio of product categories, each with different competitive dynamics, and the strategic implications vary dramatically.

Oils and lubricants are brand-driven. Workshops specify Castrol, Penrite, or Valvoline. The manufacturer has the pull. Wholesalers compete on availability and price, with limited room for differentiation.

Filters, brakes, and bearings are commodity categories where procurement scale wins. Products are fungible. Private label is viable. GPC’s global purchasing volume gives it a real edge here, though that edge lies in its cost structure, not in its customer relationship.

Specialist categories, including auto electrical, diesel, truck, and 4WD, are relationship-intensive. Fewer suppliers, deeper expertise, and more technical support required. This is where Bapcor’s multi-brand portfolio has genuine depth that GPC’s unified NAPA model doesn’t match. It’s also where the independent wholesalers are hardest to displace, because the relationship with the specialist is the product.

Collision repair is a distinct market driven by insurer dynamics. GPC’s Auto Parts Group serves 3,500 collision repair shops, a defensible niche with high switching costs built around insurer certification and parts-compatibility requirements.

If you’re running one of these companies, the strategic question isn’t “how do we win the aftermarket?” It’s “which categories do we win, and which do we concede?” Nobody wins everywhere. The company that tries to will bleed margin in the categories where it has no structural advantage.

What to Watch

Metrics

GPC Asia Pacific organic revenue growth (ex-acquisitions): Reveals whether scale is converting into customer preference or just balance sheet growth. Get it from GPC Inc earnings calls/segment commentary (quarterly).

Bapcor trade like-for-like sales: Signals whether workshops are returning after the turnaround disruption. Get it from Bapcor ASX results (1H26: 25 Feb 2026).

ARB US segment revenue and margin: Tracks whether the US retail build-out is converting brand presence into profitable distribution. Get it from ARB half-yearly results (ASX:ARB).

NAPALink active users/order volume: Tracks digital platform lock-in, the emerging structural moat. Get it from GPC Asia Pacific commentary (not yet separately disclosed).

ADAS calibration revenue/workshop count: First-mover advantage in vehicle complexity services. Get it from GPC commentary on ADAS Solutions (annual).

Key dates

• February 17, 2026. GPC Inc FY2025 full-year results published, including Asia Pacific segment detail and the announcement of the automotive/industrial separation.

• 25 February 2026. Bapcor H1 2026 results. The test: clean numbers (no new significant items) and trade customer recovery evidence.

• August 2026. ARB FY2026 full-year results. First full year with Toyota Trailhunter export revenue. US segment scale becomes clearer.

• Ongoing. NVES (New Vehicle Efficiency Standard) uptake data. Accelerant for EV transition and component mix shift.

The question that lingers

Two distribution bets, one product outlier, one market. GPC and Bapcor are betting that some form of distribution consolidation will win the mechanic’s first call. ARB is betting that the right game isn’t distribution at all, it’s engineering, brand, and product. In an industry where 80% of the market is still held by independents who survive on personal relationships, the question that lingers is whether any of them is playing the right game.

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Based on publicly available information, including industry reports, company filings, and analyst coverage.

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