The Vauxhall Astra Mk IV Convertible 1.6 16V, produced between 2000 and 2004, represented a popular entry point into the world of open-top motoring for British buyers. Positioned within the broader Mk IV Astra range (designated as the G platform by Opel, its sister brand), this variant offered a more affordable and accessible alternative to the higher-performance models. It was a key component of Vauxhall’s strategy to broaden the appeal of the Astra, capitalizing on the growing demand for convertibles in the early 2000s. The 1.6L engine and manual transmission combination aimed for a balance between reasonable performance and fuel efficiency, targeting buyers who prioritized style and affordability over outright speed.
Technical Specifications
| Brand | Vauxhall |
| Model | Astra |
| Generation | Astra Mk IV Convertible |
| Type (Engine) | 1.6 16V (103 Hp) |
| Start of production | 2000 |
| End of production | 2004 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Cabriolet |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (urban) | 8.8 l/100 km (26.7 US mpg, 32.1 UK mpg, 11.4 km/l) |
| Fuel consumption (extra urban) | 5.5 l/100 km (42.8 US mpg, 51.4 UK mpg, 18.2 km/l) |
| Fuel consumption (combined) | 6.7 l/100 km (35.1 US mpg, 42.2 UK mpg, 14.9 km/l) |
| CO2 emissions | 161 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 13 sec |
| Acceleration 0 – 62 mph | 13 sec |
| Acceleration 0 – 60 mph | 12.4 sec |
| Maximum speed | 190 km/h (118.06 mph) |
| Power | 103 Hp @ 6000 rpm |
| Power per litre | 64.5 Hp/l |
| Torque | 147 Nm @ 3600 rpm (108.42 lb.-ft. @ 3600 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | Z16XEP |
| Engine displacement | 1598 cm3 (97.52 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 | 3.25 l (3.43 US qt, 2.86 UK qt) |
| Coolant capacity | 6.1 l (6.45 US qt, 5.37 UK qt) |
| Max. weight | 1695 kg (3736.84 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 | Front wheel drive |
| Number of gears | 5 |
| Gearbox type | Manual transmission |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Tires size | 195/60 R15 |
| Wheel rims size | 15 |
Powertrain & Engine Architecture
The Astra Mk IV Convertible 1.6 16V utilized the Z16XEP engine, a member of Vauxhall/Opel’s Ecotec family. This 1.6-liter, inline-four cylinder engine featured a dual overhead camshaft (DOHC) design with four valves per cylinder, contributing to its relatively efficient breathing. The engine employed multi-point fuel injection, delivering fuel directly to each intake port. The Z16XEP was known for its durability and relatively simple design, making it a cost-effective choice for the manufacturer. The five-speed manual transmission was a standard offering, providing drivers with a degree of control over the engine’s power delivery. This transmission was chosen for its affordability and reliability, rather than for outright performance.
Driving Characteristics
The 1.6 16V engine, producing 103 horsepower, provided adequate, but not exhilarating, performance in the Astra Convertible. Acceleration from 0-60 mph took around 12.4 seconds, and top speed was approximately 118 mph. The car felt best suited to relaxed cruising rather than spirited driving. The five-speed manual transmission allowed drivers to keep the engine in its optimal power band, but the relatively low torque output (108 lb-ft) meant frequent downshifts were necessary, especially when tackling hills or overtaking. Compared to the more powerful 2.2-liter direct injection (DI) or turbo variants, the 1.6 felt noticeably slower, but it offered a more economical driving experience.
Equipment & Trim Levels
The 1.6 16V Convertible typically came with a reasonable level of standard equipment. This included central locking, electric front windows, a basic stereo system, and driver and passenger airbags. Interior upholstery was generally cloth, with a relatively simple dashboard layout. Optional extras included alloy wheels, air conditioning, and a more advanced audio system. The trim level sat towards the entry-level end of the convertible range, making it an attractive option for buyers on a budget. It was often seen as a ‘fashion’ purchase, appealing to those who wanted the style of a convertible without the higher price tag of the more powerful models.
Chassis & Braking
The Astra Mk IV Convertible utilized a MacPherson strut front suspension and a torsion beam rear suspension. The front brakes were ventilated discs, providing adequate stopping power, while the rear brakes were solid discs. The suspension setup was tuned for comfort rather than outright handling prowess, resulting in a relatively compliant ride. Stabilizer bars were fitted to both the front and rear axles to reduce body roll during cornering. The car’s weight, around 3737 lbs, contributed to its somewhat less agile handling compared to the coupe or hatchback versions of the Astra.
Market Reception & Comparison
The Astra Mk IV Convertible 1.6 16V was generally well-received by the British motoring press as an affordable and stylish entry into the convertible market. Critics praised its attractive design and reasonable fuel economy (around 35 mpg combined). However, the engine’s lack of outright power was often noted, and some reviewers felt that the car lacked the dynamic sharpness of its rivals. Compared to the more expensive 2.2i models, the 1.6 offered a significantly lower purchase price and running costs, making it a popular choice for first-time convertible buyers. The 1.6 also proved more reliable than some of the more complex turbocharged variants.
Legacy
The Z16XEP engine, found in the Astra Mk IV Convertible 1.6, has proven to be a relatively durable and reliable unit. While not without its potential issues (such as occasional coolant leaks and timing chain wear), it is generally considered a robust engine when properly maintained. Today, these cars are increasingly sought after by enthusiasts and classic car collectors. The combination of affordability, style, and relative reliability has ensured that the Astra Mk IV Convertible 1.6 16V remains a popular choice in the used car market, offering a taste of open-top motoring without breaking the bank.
