VT VX VY VZ Commodore Repair Manual
The Final Evolution of the VT Platform
The VY Commodore marked an evolution of the VT-based platform, offering sharper styling, improved engines, better interiors, and updated technology. By 2004, Holden released the VZ Commodore, representing the final iteration of the VT-derived Commodore line.
The VZ Commodore refined and modernized the VY platform with styling updates, engine improvements, enhanced handling, and upgraded features, effectively serving as the pinnacle of the first-generation 1997–2006 VT-based Commodores before the arrival of the all-new VE platform.
Design and Styling Comparison
Exterior Design
VY Commodore:
- Early 2000s styling with sharper front grille and headlights
- Sedan, wagon, and Ute variants
- Smooth, aerodynamic body with a slightly aggressive stance
VZ Commodore:
- Minor styling refresh with sleeker front fascia and updated tail lights
- Subtle changes to bumpers, mirrors, and alloy wheels
- Sedan, wagon, and Ute variants retained
- Aerodynamic tweaks gave a slightly more modern and refined appearance
The VZ looked slightly more polished and contemporary than the VY, with subtle styling updates keeping it competitive in the mid-2000s.
Interior Design
VY Commodore:
- Updated dashboard with better materials and ergonomics
- Seats redesigned for comfort and support
- Cabin quieter and more refined than VX
VZ Commodore:
- Interior trim quality improved with more soft-touch plastics
- Dashboard largely unchanged but minor cosmetic refinements
- Seats upgraded for longer trip comfort, optional leather widely available
- Improved infotainment options and audio systems
The VZ interior offered a more refined, comfortable, and modern cabin than the VY.
Platform and Engineering Changes
Chassis and Suspension:
- VY: Rear-wheel-drive VT-based platform, stable handling
- VZ: Suspension updated for better ride comfort and improved handling stability
- Minor chassis tweaks for increased rigidity and better road-holding
- Steering response refined, brakes upgraded on higher trims
The VZ offered a slightly smoother and more confident driving experience over the VY.
Engine and Drivetrain Comparison
VY Commodore Engines:
- 3.8L Ecotec V6
- Optional 5.7L V8 in SS and higher trims
- Manual or automatic transmission, rear-wheel drive
VZ Commodore Engines:
- 3.6L Alloytec V6 replaced Ecotec engine, offering more modern performance and efficiency
- Optional 5.7L V8 continued for SS and higher trims
- Transmission options: five-speed manual or four-speed automatic, smoother shifts
- Rear-wheel drive unchanged, optional traction control and ABS widely available
Performance Comparison:
- VY: Smooth and reliable engines with good handling
- VZ: Alloytec V6 provided improved power, torque, and fuel efficiency
- V8 performance slightly refined with better throttle response
- Suspension updates improved handling and ride comfort
Model Range Comparison
VY Commodore:
- Executive, Acclaim, SS, Berlina, Calais trims
- Sedan, wagon, and Ute variants
VZ Commodore:
- Executive, SV6, SS, Berlina, Calais trims
- Sedan, wagon, and Ute variants
- Alloytec V6 available on more trims
- Traction control and ABS widely standard across most trims
The VZ refined the VY lineup with more modern engines, minor suspension upgrades, and additional technology.
Technology and Features
VY:
- Optional traction control and ABS
- Interior features included climate control and upgraded audio in higher trims
VZ:
- Alloytec V6 engine introduced for improved performance and efficiency
- Traction control and ABS standard on most trims
- Improved interior trim, optional leather, better infotainment systems
- Minor electronics upgrades for convenience and safety
The VZ offered more modern features and technology improvements over the VY, enhancing comfort, safety, and drivability.
Driving Experience
VY Commodore:
- Smooth ride, stable rear-wheel-drive handling
- Comfortable seats and cabin
- Engines responsive, V8 models offering spirited performance
VZ Commodore:
- Alloytec V6 engines smoother, more efficient, and more powerful
- Suspension refinements improved comfort and handling
- Cabin quieter and more modern
- V8 performance refined, particularly on SS models
- Braking and road-holding improved for better driver confidence
The VZ provided a more polished, comfortable, and engaging driving experience compared to the VY.
Reliability and Common Problems
VY:
- Strong reliability with minor electrical or trim issues
- Engines robust and durable
VZ:
- Alloytec V6 considered very reliable and efficient
- V8 engines slightly improved in reliability
- Minor electronics issues possible on older models
- Parts widely available due to recent production
Both are dependable, but the VZ offered modern engines and minor mechanical improvements over the VY.
Ownership Costs Today
Purchase Price:
- VY: Valued as a solid early-2000s Commodore, particularly SS and Berlina trims
- VZ: Slightly more collectible due to Alloytec V6, refined handling, and updated features
Parts Availability:
- VY: Good availability for most trims
- VZ: Widely available due to later production and commonality
Running Costs:
- Both mid-size, economical for their era
- VZ slightly more efficient due to Alloytec V6 engine
Collector and Enthusiast Value
VY Commodore:
- Appreciated as a refinement of the VT platform
- SS, Berlina, and Calais trims desirable
VZ Commodore:
- Highly collectible for Alloytec V6, refinement, and final VT-based platform improvements
- SS, Berlina, Calais, and HSV variants particularly sought-after
- Represents the peak of the VT-based Commodores before VE redesign
Choose VY if:
- You want a solid, reliable early-2000s Commodore
- You value traditional Ecotec or V8 engines
Choose VZ if:
- You want the most modern VT-based Commodore with Alloytec V6, refined features, and improved comfort
- You value final evolution styling and better performance
Verdict – Which Is Better? The VY Commodore refined the VT platform with updated styling, improved engines, and better interiors. The VZ Commodore represented the final evolution of the VT platform, introducing the modern Alloytec V6, subtle styling refinements, improved suspension and braking, and updated technology. For collectors, the VY is appreciated for reliability and classic early-2000s appeal, while the VZ is prized as the most modern, refined, and capable VT-based Commodore before the VE platform arrival
VT VX VY VZ Commodore Repair Manual