The Vauxhall Astra Mk III Convertible 1.4 iS, produced from 1993 to 2001, represented an accessible entry point into the world of open-top motoring for British buyers. Positioned as the base model within the Mk III Convertible range, it offered a more affordable alternative to the higher-specification 1.6 and 1.8-liter variants. Built on the Astra Mk III (1HX0/A3) platform, this convertible aimed to capitalize on the growing popularity of cabriolets, providing a stylish and relatively practical option for those seeking wind-in-the-hair driving. While not a performance leader, the 1.4 iS offered a balance of affordability, reasonable fuel economy, and the enjoyment of a convertible lifestyle.
Technical Specifications
| Brand | Vauxhall |
| Model | Astra |
| Generation | Astra Mk III Convertible |
| Type (Engine) | 1.4 iS (82 Hp) |
| Start of production | 1993 |
| End of production | 2001 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Cabriolet |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (combined) | 7.6 l/100 km |
| Fuel consumption (US mpg) | 30.9 US mpg |
| Fuel consumption (UK mpg) | 37.2 UK mpg |
| Fuel consumption (km/l) | 13.2 km/l |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 13.5 sec |
| Acceleration 0 – 62 mph | 13.5 sec |
| Acceleration 0 – 60 mph | 12.8 sec |
| Maximum speed | 175 km/h (108.74 mph) |
| Weight-to-power ratio | 12.9 kg/Hp |
| Weight-to-torque ratio | 9.3 kg/Nm |
| Power | 82 Hp @ 5800 rpm |
| Power per litre | 59 Hp/l |
| Torque | 113 Nm @ 3400 rpm (83.34 lb.-ft. @ 3400 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | C14SE |
| Engine displacement | 1389 cm3 (84.76 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated |
| Engine oil capacity | 3.5 l (3.7 US qt | 3.08 UK qt) |
| Coolant capacity | 5.8 l (6.13 US qt | 5.1 UK qt) |
| Kerb Weight | 1055 kg (2325.88 lbs) |
| Max. weight | 1535 kg (3384.1 lbs) |
| Max load | 480 kg (1058.22 lbs) |
| Trunk (boot) space – minimum | 391 l (13.81 cu. ft.) |
| Fuel tank capacity | 52 l (13.74 US gal | 11.44 UK gal) |
| Length | 4239 mm (166.89 in) |
| Width | 1689 mm (66.5 in) |
| Height | 1410 mm (55.51 in) |
| Wheelbase | 2520 mm (99.21 in) |
| Front track | 1430 mm (56.3 in) |
| Rear track | 1420 mm (55.91 in) |
| Ride height (ground clearance) | 140 mm (5.51 in) |
| Drag coefficient (Cd) | 0.32 |
| Drivetrain Architecture | Front wheel drive |
| Number of gears | 5 gears, manual transmission |
| Front brakes | Ventilated discs |
| Rear brakes | Drum |
| Tires size | 185/60 R14 |
| Wheel rims size | 14 |
Powertrain & Engine Architecture
The heart of the Astra Mk III Convertible 1.4 iS was the C14SE engine, a 1.4-liter inline-four cylinder unit. This engine was a staple in many Vauxhall/Opel models of the era, known for its simplicity and relative reliability. It featured a single overhead camshaft (SOHC) valvetrain with two valves per cylinder. Fuel delivery was handled by a multi-port fuel injection system, providing a reasonable balance between fuel efficiency and performance. The engine produced 82 horsepower at 5800 rpm and 113 Nm (83.34 lb-ft) of torque at 3400 rpm. The engine was transversely mounted, driving the front wheels. The standard transmission was a five-speed manual gearbox, although a four-speed automatic transmission was also available, albeit less common. The automatic gearbox, while offering convenience, did noticeably impact acceleration and fuel economy.
Driving Characteristics
The 1.4 iS Convertible offered a relaxed driving experience. Acceleration was modest, taking around 13.5 seconds to reach 62 mph. The engine felt somewhat strained when pushed hard, particularly with a full load of passengers. The five-speed manual gearbox allowed drivers to keep the engine in its optimal power band, but the automatic version felt sluggish in comparison. Handling was typical of front-wheel-drive cars of the period – safe and predictable, but not particularly engaging. The convertible top, while providing open-air enjoyment, did introduce some scuttle shake, a common characteristic of older convertible designs. The steering was light and easy, making it suitable for urban driving.
Equipment & Trim Levels
The 1.4 iS Convertible was generally equipped with basic, but functional, features. Standard equipment typically included power steering, central locking, and an adjustable steering column. Interior upholstery was usually cloth, with a relatively simple dashboard layout. Optional extras included alloy wheels, electric windows, and a more sophisticated stereo system. The trim level was positioned as the entry-level offering, meaning it lacked some of the more luxurious features found in the 1.6 and 1.8-liter models. However, it still provided a comfortable and enjoyable driving experience for those on a budget.
Chassis & Braking
The Astra Mk III 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 drums. This configuration was typical for cars in this weight class and price range during the 1990s. The suspension was tuned for comfort rather than outright handling prowess, providing a reasonably smooth ride over most road surfaces. Stabilizer bars were fitted to both the front and rear axles to reduce body roll during cornering.
Market Reception & Comparison
The Astra Mk III Convertible 1.4 iS was generally well-received as an affordable and stylish entry into the convertible market. Critics praised its value for money and its relatively low running costs. However, the engine’s lack of outright power was often noted. Compared to the 1.6 and 1.8-liter versions, the 1.4 iS offered significantly less performance, but at a lower purchase price. The 1.6-liter model provided a noticeable improvement in acceleration and overall driving enjoyment, while the 1.8-liter was the performance leader of the range. Fuel economy was a strong point for the 1.4 iS, making it an attractive option for those seeking a cost-effective convertible.
Legacy
The Astra Mk III Convertible 1.4 iS remains a popular choice among classic car enthusiasts and those seeking an affordable convertible. The C14SE engine is known for its durability and relatively simple maintenance requirements. However, like all older cars, it is susceptible to age-related issues such as corrosion and wear and tear on rubber components. Parts availability is generally good, as many components were shared with other Vauxhall/Opel models of the era. Today, the 1.4 iS Convertible represents a nostalgic reminder of a time when open-top motoring was becoming increasingly accessible to the masses. Its affordability and charm continue to make it a desirable classic car for those seeking a taste of 1990s motoring.
