Heavy Diesel Mechanic Salary in Australia: What to Expect in 2026–27

What Is a Heavy Diesel Mechanic Salary in Australia?

If you're reading a job ad for a heavy diesel mechanic, the salary figure can be confusing. Some ads quote an annual package, others an hourly rate, and many don't mention the award or enterprise agreement behind the number. This guide helps you decode those offers using the Salary Index, award minima, and state benchmarks.

A heavy diesel mechanic maintains, tests, and repairs diesel engines in trucks, buses, earthmoving equipment, and other heavy vehicles. The occupation is classified under ANZSCO 321212 (Diesel Motor Mechanic). According to Jobs and Skills Australia, there are about 7,400 people employed in this role, 93% work full-time, and the average full-time week is 46 hours. The median age is 32, and only 1% are women.

Where Does the Pay Sit on the Salary Index?

The Salary Index compares a gross annual salary to the national line of 100, which equals $108,352 (full-time adult ordinary-time earnings from the ABS Average Weekly Earnings survey, May 2026). The national minimum wage sits at index 48.2 ($52,255). Unfortunately, the ABS does not publish median weekly earnings for diesel motor mechanics at the detailed 6-digit level, so we can't give you a precise index number for the occupation. However, we can estimate using award rates and industry data.

Under the Vehicle Repair, Services and Retail Award 2020 (MA000089), a qualified heavy diesel mechanic at Level 3 or 4 earns roughly $28–$32 per hour from July 2026, after the 4.75% annual wage review increase. That works out to about $1,120–$1,280 per week for a 40-hour week (index 54–61). But most mechanics work 46 hours on average, so with overtime penalties (typically 1.5x for the first two hours, 2x thereafter), weekly pay can reach $1,400–$1,700 (index 67–82).

Experienced mechanics in mining, oil and gas, or remote areas often earn much more. The mining industry index is 154.7, meaning the average mining worker earns about $167,000 per year. A heavy diesel mechanic in that sector might earn $120,000–$150,000 (index 111–138). In transport and logistics, pay is closer to the award but can include site allowances and travel pay.

Comparing Offers Across States

Location matters. The Salary Index shows state benchmarks:

• New South Wales: index 101.2 ($109,658)
• Victoria: index 98 ($106,137)
• Queensland: index 97.9 ($106,064)
• South Australia: index 94.6 ($102,450)
• Western Australia: index 106.9 ($115,825)
• Tasmania: index 88.6 ($96,008)
• Northern Territory: index 95.2 ($103,173)
• ACT: index 109.9 ($119,090)

A job in Western Australia or the ACT will likely pay more than one in Tasmania or South Australia, even for the same role. When comparing, adjust the offer by the state index to see if it's above or below the local average.

Reading a Job Ad: What to Look For

When you see a salary in an ad, ask:

1. Is it base or package? Package may include super (12% from July 2026), vehicle, or accommodation. The Salary Index uses gross ordinary-time earnings, so exclude super and non-cash benefits for a fair comparison.
2. What award or agreement applies? The Vehicle Repair Award is the default, but many employers have enterprise agreements that pay more. Check the Fair Work Commission's pay guides for the latest minimum rates.
3. What hours are expected? If the ad says "$90,000 + super" but expects 50 hours a week, the effective hourly rate may be lower than a $75,000 job with a 38-hour week.
4. Is there overtime or penalty rates? Weekend work, night shifts, and public holidays attract higher rates under the award. A job with regular overtime can push your index well above the base.

Example: Comparing Two Offers

Offer A: $85,000 base, 40 hours/week, in Brisbane (QLD index 97.9). Offer B: $95,000 base, 45 hours/week, in Perth (WA index 106.9).

Calculate index for Offer A: 85,000 / 108,352 × 100 = 78.5. Compare to QLD average (97.9) – it's below. Offer B: 95,000 / 108,352 × 100 = 87.7. Compare to WA average (106.9) – also below, but the gap is smaller. However, Offer B requires more hours. Convert to hourly: Offer A is $40.87/hr (85,000 / 52 / 40), Offer B is $40.60/hr (95,000 / 52 / 45). Offer A actually pays slightly more per hour. The index helps you see the overall salary level, but hours matter too.

Award Coverage and Super

Most heavy diesel mechanics are covered by the Vehicle Repair, Services and Retail Award 2020. The award sets minimum wages, allowances (e.g., tool allowance, industry allowance), and penalty rates. From 1 July 2026, the national minimum wage is $26.44/hr, but award rates are higher for qualified tradespeople. Super guarantee is 12% on top of ordinary time earnings, with a maximum contribution base of $270,830.

If you're comparing offers, remember that super is not part of your take-home pay but is a compulsory benefit. The Salary Index uses gross earnings before super, so add 12% to the index if you want to include super in the comparison.

Tax and Take-Home Pay

For 2026–27, resident tax rates (excluding Medicare levy of 2%) are:

• $0–$18,200: nil
• $18,201–$45,000: 15%
• $45,001–$135,000: 30%
• $135,001–$190,000: 37%
• Over $190,000: 45%

A heavy diesel mechanic earning $90,000 would pay about $19,867 in tax plus $1,800 Medicare levy, leaving around $68,333 take-home. That's an index of 83 on gross, but only 63 on after-tax. The Salary Index focuses on gross because it's the standard benchmark.

Where to Find More Information

• Salary Index: Compare any salary to the national line.
• Pay guides: Latest award rates for vehicle repair and other industries.
• States: State-by-state benchmarks for location adjustment.
• Industries: See how mining, transport, and other sectors compare.
• How the index works: Full methodology.
• Topics: More guides on understanding pay.

For award-specific details, the Fair Work Commission's Modern Awards Pay Database provides the latest classification rates and allowances. Jobs and Skills Australia's occupation profile for diesel motor mechanics gives employment and demographic data.

The Bottom Line

Without a published median, the heavy diesel mechanic salary is uncertain but typically ranges from index 55 (award minimum) to 120+ (experienced in mining). Use the Salary Index to compare any offer against the national line, adjust for your state, and always check the hours and conditions behind the dollar figure.