The Holden Commodore is one of Australia’s most iconic cars, known for its robust V6 and V8 engines, roomy interior, and versatility. Many Aussies still rely on older Commodores as daily drivers, often with 200 000 km or more on the clock. But while these cars are affordable upfront, the true cost of running a high-kilometre Holden Commodore extends far beyond the purchase price.
If you’re considering driving one every day, it’s crucial to understand both the obvious expenses and the hidden costs that come with an older car.
1. Fuel Costs: The Most Visible Expense
Fuel is the first thing that comes to mind when considering running costs. But high-kilometre Commodores often consume more fuel than newer vehicles due to engine wear, degraded fuel injectors, and older drivetrains.
- V6 models: Average 10–12L/100km, rising to 12–14L/100km if the engine is older or poorly maintained.
- V8 models: Can easily reach 14–18L/100km, particularly with city driving.
Tip: Fuel costs may be higher than expected on high-kilometre cars, especially if the engine has lost efficiency over time.
2. Regular Maintenance: Expect the Unexpected
Older Commodores need more frequent maintenance to stay reliable as daily drivers. The higher the mileage, the more attention they require.
Routine Maintenance Costs
- Oil changes: $120–$200 every 5,000–10,000 km.
- Brake pads and discs: $300–$600 per axle; high-mileage cars may need replacements more often.
- Suspension components: Worn shocks, bushings, and ball joints are common. Expect $600–$1 200 for a full replacement.
- Cooling system: Radiators, water pumps, and hoses often need replacement in cars over 200 000 km, costing $400–$800.
Even with preventative maintenance, high-kilometre cars are more likely to encounter unexpected mechanical issues, so having a contingency budget is essential.
3. Hidden Costs of a High-Kilometre Commodore
Many costs are not immediately obvious but can significantly impact your budget:
Transmission Wear
- Automatic transmissions may require fluid changes every 50 000–100 000 km, and high-mileage units could need a rebuild, which can cost $2 000–$3 500.
Differential and Drivetrain
- Worn differentials or driveshafts are common on older V6/V8 models. Differential servicing is around $150–$250, but repairs can be much higher if gears or bearings fail.
Rust and Bodywork
- Older Commodores, especially VT–VY models, are prone to rust around sills, wheel arches, and subframes. Minor rust treatment can cost $500–$1 000, while extensive repairs may exceed $3 000.
Electrical and Electronics
- High-mileage vehicles often develop issues with ECU sensors, instrument clusters, power windows, or stereo systems. Repairs vary from $150 for minor sensors to over $1 000 for full ECU replacements.
Tyres, Wheels, and Wearables
- A full set of tyres on a Commodore costs $600–$1 200, and high-mileage cars may require more frequent replacements due to uneven wear.
- Batteries, wiper blades, and minor consumables add another $200–$400/year.
4. Insurance and Registration
Even older cars aren’t free to insure or register:
- Registration: $1 200–$1 800 per year, depending on state and engine size.
- Insurance: Comprehensive coverage for older Commodores can cost $800–$1 500, while third-party fire & theft may be $400–$700.
- High-kilometre cars might be cheaper to insure due to lower market value, but age-related depreciation does not reduce the cost of repairs.
5. Total Annual Running Cost for a Daily Driver
For a 200 000+ km Holden Commodore used 15 000 km per year, here’s a realistic estimate:
| Category | Annual Cost |
|---|---|
| Fuel (V6) | $2 400–$3 800 |
| Maintenance & Servicing | $1 500–$3 000 |
| Unexpected Repairs | $1 000–$3 500 |
| Insurance | $800–$1 500 |
| Registration | $1 200–$1 800 |
| Tyres & Consumables | $600–$1,200 |
| Total | $7 500–$14 800 |
Note: V8 models or neglected vehicles can push this total higher, making budgeting for a high-kilometre Commodore crucial.
6. Tips to Minimise Costs
- Buy wisely: Look for a Commodore with service history and no major rust.
- DIY basic maintenance: Oil changes, brake pad replacement, and suspension bush inspections save hundreds.
- LPG conversion: Reduces fuel costs, particularly for city driving.
- Preventative maintenance: Replace cooling system components and belts before failure.
- Regular inspections: High-mileage engines benefit from early detection of leaks, worn suspension, and transmission issues.
Final Thoughts
A high-kilometre Holden Commodore can still be a reliable and affordable daily driver — but the running and maintenance costs are real and often underestimated. Fuel, routine maintenance, hidden repairs, and insurance all add up, and unexpected issues can quickly turn a cheap car into a costly one.
If you’re considering using a Commodore with 200 000+ km as your daily ride, plan for the hidden costs, budget for contingencies, and perform regular preventative maintenance. By understanding the true cost of ownership, you can enjoy one of Australia’s automotive icons without breaking the bank.