The ZB Holden Commodore, produced by General Motors in Germany from 2018 to 2020, served as the twelfth generation of the well-known Commodore model.

This mid to large-size family car marked a departure from previous Commodores, as Holden transitioned from locally manufactured to imported models, basing the ZB on the Opel Insignia.

The design of the Commodore ZB featured a sleek and modern aesthetic, characterised by a more aerodynamic profile compared to its predecessors.

Both lift-back sedan and wagon body styles were offered, providing immense levels of practicality.

Notably, the ZB shifted from a rear-wheel drive platform to a front-wheel or all-wheel drive configuration, eliciting mixed reactions from enthusiasts to say the least. However, this change brought improved fuel efficiency and enhanced traction in various driving conditions.

The Commodore ZB’s engine options included a turbocharged four-cylinder petrol engine, a V6 petrol engine, and a diesel engine. Transmission choices ranged from a six-speed manual to a nine-speed automatic; however, all have their own reliability idiosyncrasies.

Inside, the Commodore ZB boasted a spacious cabin with a class-leading array of modern amenities and advanced technology. It accommodated five passengers comfortably and featured safety elements like autonomous emergency braking, lane-keep assist, adaptive cruise control, and blind-spot monitoring.

The infotainment system offered touchscreen controls, Apple CarPlay/Android Auto integration, and other connectivity options.

Despite positive reviews for its handling, safety features, and technology, the Commodore ZB faced challenges in the Australian market, including shifting consumer preferences towards SUVs, the cessation of local manufacturing, and increased competition.

Consequently, Holden ceased production and sales of the Commodore ZB in 2020, marking the conclusion of an era for this iconic Australian car.

What goes wrong with a used Holden ZB Commodore?

Exterior:

Some reports indicate that the paint on the Holden Commodore ZB is susceptible to easy scratching, with clear coat and paint fading and peeling, especially around water channels and the windscreen.

Sun exposure appears to exacerbate these issues, and cars regularly garaged and well-maintained seem to be less affected.

Concerns arise about potential costs for a quality full respray or wrap if peeling issues persist.

Owners have reported instances of water leakage through the tail lights, potentially due to seal issues.

Sporadic reports mention body kit parts coming loose or rims cracking, though these aren’t considered common complaints.

Inside:

Failing air conditioning is a common issue, often attributed to a/c lines being routed too close to the engine, leading to rubbing and gas leaks.

Problems typically arise around the 80,000km mark, but many have been resolved under warranty or during routine servicing.

Some owners have reported issues with air conditioning condensers.

Occasional reports mention odd electrical glitches, such as the start/stop system not working or infotainment glitches, though these are not widespread.

Some owners have experienced rattles and squeaks, possibly due to loose plastic clips or modules controlling the infotainment and stereo coming loose under the dash.

A few reports of interior trim plastics lifting and centre console covers not closing, but these are not considered common issues.

Mechanically:

2.0 Petrol Turbo 4 Cylinder:

Part of the Ecotec engine family, historically known for reliability issues, though the ZB’s version is improved.

Occasional problems with timing chains, turbos, and oil consumption, often linked to poor servicing.

Rare issues include high-pressure fuel pump failures and reports of throttle body and APP glitches.

Diesel Engine:

Manufactured by Fiat, known for injector seal and oil leak problems, which are common to other vehicles.

Generally reliable but may face challenges with unique components in this specific model in Australia.

Timing belt replacement is required every 120,000km.

V6 Engine:

Significantly different from previous Commodore 6-cylinders, with redesigned timing chains (now 2, not 3) and fewer reported complications.

Common issues include thermostat failure, cooling problems (often covered under warranty), and potential future carbon buildup due to direct injection.

Recall for brake booster and ABS control module complications.

Increasing reports of transmission and rear diff issues on all-wheel drive models, with fluid changes sometimes resolving odd noises.

Occasional shift selector position complications, typically manageable in-cabin issues.

A major concern is the availability of parts and support since Holden no longer exists.

While the ZB’s platform and powertrains are still in production globally, obtaining parts locally can be costly and time-consuming, considering shipping expenses and potential delays.

Recalls:

April 2018 – Incorrectly installed seatbelts in 2,194 Holden Commodore vehicles may increase the risk of injury to passengers in the rear left and right seats during accidents.

October 2018 – Holden Commodore: Fuel hose clip rubbing on fuel pump return hose may cause fuel leak and fire hazard.

November 2019 – Improperly welded cross-member in Holden ZB COMMODORE and BK ASTRA models may increase the risk of injury to occupants in rear-impact accidents.

January 2020 – Fuel hose clip rubbing on the fuel pump return hose in Holden Commodore models from 2018 to 2020 may cause a fuel leak, posing a potential risk of fire and injury to occupants and property.

August 2022 – Holden ZB Commodore (2017-2020) has a manufacturing defect in the brake booster, affecting 13,898 units, which could lead to increased stopping distance and pose a risk of accidents causing serious injury or death.

Should you buy a used Holden ZB Commodore?

Despite potential concerns regarding reliability, parts availability, and the occasional lemon that should be avoided, the Holden ZB Commodore remains a solid and refined car.

While some Holden purists may resist acknowledging it, the ZB represents the best version of the Commodore that was available in Australia, especially in the ‘normal’ models. Special variants like SS or HSV models were truly exceptional, but they belong to a different era.

The ZB Commodore outshines its predecessors in refinement, safety, and efficiency. However, it faced challenges, including a declining interest in family sedans and wagons and the overall struggle of an ailing company. Unfortunately, the ZB’s fate seemed sealed from the moment it launched.

Should you consider buying one? Typically, our assessment is based on the car’s attributes, which, in this case, are commendable. However, the significant drawback lies in the reported abysmal aftersales support.

This extends not only to the Commodore but other Holden models as well. Relying on wreckers for parts, ordering new parts from Germany, and uncertainty about warranty honors create substantial hurdles.

If you can overlook these challenges, the ZB Commodore offers a great driving experience. However, if you seek an ownership experience where the manufacturer genuinely supports you, Holden might not be the ideal choice.

Owning a ZB requires high levels of care, maintenance, and commitment, but considering the extraordinary value it offers for the money, we cautiously suggest a yes—provided you choose the right example.

While it may not reach Japanese levels of build quality or reliability, one owner aptly described the ZB as the lowest-travelled, newest, best value, and highest-featured car available for the money.

At ReDriven, we provide used car reviews based on performance, reliability, and more. If you’re interested in reviews similar to the Holden ZB Commodore or other used cars, please visit our cheat sheet page.