The Vauxhall Astra Mk IV Convertible 2.2 16V, produced between 2000 and 2004, represented the top-of-the-line engine option for the fourth-generation Astra convertible. Positioned as the premium offering in the range, it aimed to provide a more spirited driving experience compared to the lower-displacement engines available. This model was part of the broader Astra Mk IV (G) series, built on the GM240 platform, and offered open-air motoring with a focus on style and relatively accessible performance. While the Astra nameplate has a long history in Europe, the convertible variant was a key component in Vauxhall’s attempt to broaden its appeal to a more lifestyle-oriented customer base.
| Brand | Vauxhall |
| Model | Astra |
| Generation | Astra Mk IV Convertible |
| Type (Engine) | 2.2 16V (147 Hp) |
| Start of production | 2000 |
| End of production | 2004 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Cabriolet |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (urban) | 11.8 l/100 km (19.9 US mpg) |
| Fuel consumption (extra urban) | 6.1 l/100 km (38.6 US mpg) |
| Fuel consumption (combined) | 8.2 l/100 km (28.7 US mpg) |
| CO2 emissions | 197 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 9.5 sec |
| Acceleration 0 – 62 mph | 9.5 sec |
| Acceleration 0 – 60 mph | 9 sec |
| Maximum speed | 216 km/h (134.22 mph) |
| Power | 147 Hp @ 5800 rpm |
| Torque | 203 Nm @ 4000 rpm (149.73 lb.-ft. @ 4000 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | Z22SE |
| Engine displacement | 2198 cm3 (134.13 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated |
| Engine oil capacity | 5 l (5.28 US qt | 4.4 UK qt) |
| Coolant capacity | 6.8 l (7.19 US qt | 5.98 UK qt) |
| Max. weight | 1765 kg (3891.16 lbs.) |
| Trunk (boot) space – minimum | 330 l (11.65 cu. ft.) |
| Fuel tank capacity | 52 l (13.74 US gal | 11.44 UK gal) |
| Length | 4267 mm (167.99 in.) |
| Width | 1709 mm (67.28 in.) |
| Width including mirrors | 1989 mm (78.31 in.) |
| Height | 1390 mm (54.72 in.) |
| Wheelbase | 2606 mm (102.6 in.) |
| Front track | 1474 mm (58.03 in.) |
| Rear track | 1462 mm (57.56 in.) |
| Ride height (ground clearance) | 130 mm (5.12 in.) |
| Drag coefficient (Cd) | 0.28 |
| Minimum turning circle | 10 m (32.81 ft.) |
| Drivetrain Architecture | Front wheel drive |
| Number of gears | 5 |
| Gearbox type | Manual transmission |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Tires size | 205/50 R16 |
| Wheel rims size | 16 |
Powertrain & Engine Architecture
The heart of the Astra Mk IV Convertible 2.2 16V is the Z22SE engine, a 2.2-liter inline-four cylinder gasoline engine. This engine is a member of Vauxhall/Opel’s ‘Ecotec’ family, known for its focus on efficiency and refinement. The ‘16V’ designation indicates the engine features four valves per cylinder, enhancing breathing and contributing to its power output. The Z22SE utilizes multi-port fuel injection, delivering fuel directly into the intake ports, and a single overhead camshaft (SOHC) design. The engine produces 147 horsepower at 5800 rpm and 203 Nm (149.73 lb-ft) of torque at 4000 rpm. This power was delivered through a five-speed manual transmission, the standard offering for this variant. While an automatic transmission was available on other Astra Mk IV models, it wasn’t typically paired with the 2.2-liter engine due to torque limitations of the available automatic gearboxes.
Driving Characteristics
The 2.2-liter engine provided a noticeable step up in performance compared to the 1.6- and 1.8-liter versions of the Astra Convertible. Acceleration to 60 mph took approximately 9 seconds, and it offered a respectable top speed of 134 mph. The five-speed manual transmission allowed drivers to effectively utilize the engine’s powerband. Gear ratios were fairly standard for the time, prioritizing a balance between acceleration and cruising efficiency. Compared to the lower-powered models, the 2.2 felt more confident when fully loaded or tackling inclines. However, it wasn’t a sports car; the focus remained on comfortable, relaxed open-top motoring. The weight of the convertible top mechanism and reinforced chassis did impact handling somewhat, resulting in a slightly less agile feel than the coupe or hatchback versions of the Astra.
Equipment & Trim Levels
The 2.2 16V Convertible typically came with a relatively generous level of standard equipment. This included power steering, central locking, electric front windows, and an upgraded stereo system. Interior upholstery was generally cloth, although leather options were available as an extra cost. Dashboard trim was typically a dark wood or metallic finish. Optional extras included air conditioning, alloy wheels, a more advanced sound system, and a wind deflector to reduce turbulence in the cabin when the roof was down. The convertible also featured a power-operated roof, a key selling point for this model.
Chassis & Braking
The Astra Mk IV Convertible utilized a MacPherson strut front suspension and a torsion beam rear suspension. The chassis was reinforced compared to the standard Astra to compensate for the lack of a fixed roof, adding weight but improving structural rigidity. Braking consisted of ventilated discs on the front wheels and solid discs on the rear. Anti-lock Braking System (ABS) was standard. Stabilizer bars were fitted to both the front and rear axles to reduce body roll during cornering. The suspension tuning was geared towards comfort, providing a relatively smooth ride, although it wasn’t particularly sporty.
Market Reception & Comparison
The Astra Mk IV Convertible 2.2 16V was generally well-received by automotive critics. It was praised for its stylish design, comfortable ride, and the added performance offered by the 2.2-liter engine. However, some reviewers noted that the car felt somewhat heavy and lacked the dynamic handling of more focused convertibles. Compared to the 1.8-liter version, the 2.2 offered a significant improvement in acceleration and overall driving enjoyment. Fuel economy was predictably lower than the smaller-engined models, averaging around 28.7 US mpg in combined driving. Reliability was generally good, although the convertible top mechanism could occasionally require maintenance.
Legacy
The Astra Mk IV Convertible 2.2 16V remains a relatively affordable and accessible entry point into classic convertible ownership. The Z22SE engine is known for its durability, and parts availability is generally good. However, as with any older vehicle, regular maintenance is crucial. Rust can be a concern, particularly on cars that haven’t been properly stored. Today, these cars are often sought after by enthusiasts looking for a stylish and relatively reliable open-top motoring experience. The 2.2-liter variant, being the most powerful in the range, holds a slight premium in the used car market, appealing to those who prioritize performance over ultimate fuel efficiency.
