The Vauxhall Astra Mk V Convertible 2.0, produced between 2006 and 2011, represented the performance-oriented offering within the Astra Mk V Convertible range. Positioned as the flagship trim, it aimed to provide an open-air driving experience with a significant power upgrade compared to the lower-spec engines available. This variant was primarily marketed in Europe, leveraging the popularity of convertible vehicles in that region. It utilized the GM/Opel’s ‘H’ platform, shared with other models like the Opel Tigra TwinTop, and offered a blend of style, performance, and practicality. The 2.0-liter turbocharged engine was a key differentiator, appealing to drivers seeking a more engaging driving experience than the base models provided.
Technical Specifications
| Brand | Vauxhall |
| Model | Astra |
| Generation | Astra Mk V Convertible |
| Type (Engine) | 2.0 (200 Hp) |
| Start of production | 2006 |
| End of production | 2011 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe – Cabriolet |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (economy) – urban | 13.4 l/100 km (17.6 US mpg, 21.1 UK mpg, 7.5 km/l) |
| Fuel consumption (economy) – extra urban | 7.3 l/100 km (32.2 US mpg, 38.7 UK mpg, 13.7 km/l) |
| Fuel consumption (economy) – combined | 9.5 l/100 km (24.8 US mpg, 29.7 UK mpg, 10.5 km/l) |
| CO2 emissions | 228 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 8.3 sec |
| Acceleration 0 – 62 mph | 8.3 sec |
| Acceleration 0 – 60 mph | 7.9 sec |
| Maximum speed | 237 km/h (147.26 mph) |
| Emission standard | Euro 4 |
| Weight-to-power ratio | 8.2 kg/Hp, 121.6 Hp/tonne |
| Weight-to-torque ratio | 6.3 kg/Nm, 159.3 Nm/tonne |
| Power | 200 Hp @ 5400 rpm |
| Power per litre | 100.1 Hp/l |
| Torque | 262 Nm @ 4200 rpm (193.24 lb.-ft. @ 4200 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | Z20LER |
| Engine displacement | 1998 cm3 (121.93 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 86 mm (3.39 in.) |
| Piston Stroke | 86 mm (3.39 in.) |
| Compression ratio | 8.8:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Turbocharger, Intercooler |
| Engine oil capacity | 4.3 l (4.54 US qt | 3.78 UK qt) |
| Coolant | 7.7 l (8.14 US qt | 6.78 UK qt) |
| Kerb Weight | 1645 kg (3626.6 lbs.) |
| Max. weight | 1865 kg (4111.62 lbs.) |
| Max load | 220 kg (485.02 lbs.) |
| Trunk (boot) space – minimum | 205 l (7.24 cu. ft.) |
| Trunk (boot) space – maximum | 440 l (15.54 cu. ft.) |
| Fuel tank capacity | 52 l (13.74 US gal | 11.44 UK gal) |
| Length | 4476 mm (176.22 in.) |
| Width | 1759 mm (69.25 in.) |
| Width including mirrors | 2021 mm (79.57 in.) |
| Height | 1411 mm (55.55 in.) |
| Wheelbase | 2614 mm (102.91 in.) |
| Front track | 1491 mm (58.7 in.) |
| Rear (Back) track | 1481 mm (58.31 in.) |
| Ride height (ground clearance) | 130 mm (5.12 in.) |
| Drag coefficient (Cd) | 0.31 |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the front wheels of the vehicle. |
| Drive wheel | Front wheel drive |
| Number of gears and type of gearbox | 6 gears, manual transmission |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Tires size | 225/45 R17 |
| Wheel rims size | 17 |
Powertrain & Engine Architecture
The heart of the Astra Mk V Convertible 2.0 was the Z20LER engine, a 1.998-liter inline-four cylinder gasoline engine. This engine was turbocharged and intercooled, utilizing multi-port fuel injection to deliver 200 horsepower at 5400 rpm and 262 Nm (193.24 lb-ft) of torque at 4200 rpm. The turbocharger significantly boosted power output compared to naturally aspirated engines in the range. The engine featured a compression ratio of 8.8:1 and a four-valve-per-cylinder configuration, contributing to its performance characteristics. The engine was transversely mounted in the front of the vehicle. The standard transmission was a six-speed manual gearbox, designed to handle the increased power and torque. While an automatic transmission was offered on other Astra Mk V models, it wasn’t typically paired with the 2.0-liter turbocharged engine in the convertible variant.
Driving Characteristics
The 2.0-liter turbocharged engine transformed the driving experience of the Astra Mk V Convertible. Acceleration from 0 to 60 mph was achieved in approximately 7.9 seconds, and it had a top speed of 147.26 mph. The turbocharger provided a noticeable boost in power, delivering strong acceleration in the mid-range. The six-speed manual transmission allowed drivers to keep the engine in its optimal power band. Compared to the lower-powered engines, the 2.0-liter offered a more responsive and engaging driving experience, particularly during overtaking maneuvers. However, the added power did come with a slight trade-off in fuel economy. The suspension was tuned to provide a balance between comfort and handling, offering a reasonably composed ride even with the added weight of the convertible mechanism.
Equipment & Trim Levels
The 2.0-liter Convertible typically came with a higher level of standard equipment than the base models. This included features like alloy wheels, air conditioning, electric windows and mirrors, a CD stereo system, and sports seats. Optional extras included leather upholstery, a sunroof, and upgraded audio systems. The interior trim was generally well-appointed, with a focus on providing a comfortable and stylish environment. The convertible top was a fully automatic, electrically operated soft top, designed for ease of use. Safety features included ABS brakes, electronic stability control, and front and side airbags.
Chassis & Braking
The Astra Mk V Convertible utilized a MacPherson strut front suspension and a torsion beam rear suspension. The front brakes were ventilated discs, while the rear brakes were solid discs. This braking setup provided adequate stopping power for the vehicle’s weight and performance. The chassis was reinforced to compensate for the lack of a fixed roof, ensuring structural rigidity. The steering was power-assisted, providing a light and responsive feel. The 225/45 R17 tires offered good grip and handling characteristics.
Market Reception & Comparison
The Astra Mk V Convertible 2.0 was generally well-received by automotive critics. It was praised for its stylish design, engaging driving experience, and relatively affordable price point. However, some critics noted that the interior quality wasn’t quite as refined as some of its competitors. Compared to other convertibles in its class, such as the Ford Focus CC or Peugeot 308 CC, the Astra offered a more performance-focused driving experience. The 2.0-liter engine provided a noticeable power advantage over the base engines, but it also resulted in slightly higher fuel consumption and emissions. Reliability was generally considered average for the period, with some reports of minor electrical issues.
Legacy
The Astra Mk V Convertible 2.0 remains a popular choice among used car buyers seeking an affordable and stylish convertible. The Z20LER engine is generally considered to be a reliable unit, provided it has been properly maintained. However, as with any turbocharged engine, regular oil changes and careful driving are essential. The convertible mechanism is relatively robust, but it’s important to check for any signs of wear or damage. Today, these vehicles represent a relatively accessible entry point into the world of performance convertibles, offering a blend of style, practicality, and driving enjoyment.
