The Vauxhall Astra Mk V CC Sport Hatch 1.8i, produced between 2005 and 2010, represented a key offering within the H-series Astra range (2004-2009). Positioned as a sporty, yet accessible, variant of the three-door coupe (CC) body style, it aimed to attract buyers seeking a balance between performance and practicality. This model sat within the broader Astra Mk V lineup, which was based on the GM Delta platform, shared with other vehicles like the Opel Astra, Chevrolet Astra, and even the Saab 9-3. The 1.8i variant, with its 125 horsepower output, served as a mid-range option, bridging the gap between the more economical base models and the higher-performance Astra variants like the SRi or VXR.
Technical Specifications
| Brand | Vauxhall |
| Model | Astra |
| Generation | Astra Mk V CC Sport Hatch |
| Type (Engine) | 1.8i (125 Hp) |
| Start of production | 2005 |
| End of production | 2010 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Hatchback |
| Seats | 5 |
| Doors | 3 |
| Fuel consumption (urban) | 10.4 l/100 km (22.6 US mpg, 27.2 UK mpg, 9.6 km/l) |
| Fuel consumption (extra urban) | 6.1 l/100 km (38.6 US mpg, 46.3 UK mpg, 16.4 km/l) |
| Fuel consumption (combined) | 7.7 l/100 km (30.5 US mpg, 36.7 UK mpg, 13 km/l) |
| CO2 emissions | 185 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 10 sec |
| Acceleration 0 – 62 mph | 10 sec |
| Acceleration 0 – 60 mph | 9.5 sec |
| Maximum speed | 200 km/h (124.27 mph) |
| Weight-to-power ratio | 9.8 kg/Hp, 102.3 Hp/tonne |
| Weight-to-torque ratio | 7.2 kg/Nm, 138.3 Nm/tonne |
| Power | 125 Hp @ 5600 rpm |
| Power per litre | 69.6 Hp/l |
| Torque | 169 Nm @ 3800 rpm (124.65 lb.-ft. @ 3800 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | Z18XE |
| Engine displacement | 1796 cm3 (109.6 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 80.5 mm (3.17 in.) |
| Piston Stroke | 88.2 mm (3.47 in.) |
| Compression ratio | 10.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC |
| Engine oil capacity | 4.25 l (4.49 US qt | 3.74 UK qt) |
| Coolant | 6.5 l (6.87 US qt | 5.72 UK qt) |
| Kerb Weight | 1222 kg (2694.05 lbs.) |
| Max. weight | 1760 kg (3880.14 lbs.) |
| Max load | 538 kg (1186.09 lbs.) |
| Trunk (boot) space – minimum | 312 l (11.02 cu. ft.) |
| Fuel tank capacity | 52 l (13.74 US gal | 11.44 UK gal) |
| Permitted trailer load with brakes (12%) | 1300 kg (2866.01 lbs.) |
| Permitted trailer load without brakes | 630 kg (1388.91 lbs.) |
| Length | 4290 mm (168.9 in.) |
| Width | 1753 mm (69.02 in.) |
| Width including mirrors | 2033 mm (80.04 in.) |
| Height | 1415 mm (55.71 in.) |
| Wheelbase | 2614 mm (102.91 in.) |
| Front track | 1488 mm (58.58 in.) |
| Rear (Back) track | 1488 mm (58.58 in.) |
| Front overhang | 910 mm (35.83 in.) |
| Rear overhang | 766 mm (30.16 in.) |
| Ride height (ground clearance) | 130 mm (5.12 in.) |
| Drag coefficient (Cd) | 0.28 |
| Minimum turning circle (turning diameter) | 10 m (32.81 ft.) |
| 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 | 5 gears, manual transmission |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Tires size | 205/55 R16 |
| Wheel rims size | 6.5J x 16 |
Powertrain & Engine Architecture
The heart of the Astra Mk V 1.8i was the Z18XE engine, a naturally aspirated, 1.8-liter (1796 cc) inline-four cylinder petrol engine. This engine was a mainstay in many Vauxhall/Opel models of the era. The Z18XE featured a dual overhead camshaft (DOHC) valvetrain with four valves per cylinder, contributing to its relatively efficient breathing. Fuel delivery was handled by a multi-port fuel injection system, providing precise fuel metering for optimal combustion. The engine produced 125 horsepower at 5600 rpm and 169 Nm (124.65 lb-ft) of torque at 3800 rpm. The engine’s compression ratio was 10.5:1. The standard transmission was a five-speed manual gearbox, although a four-speed automatic transmission was also available, impacting performance and fuel economy. The automatic transmission, while offering convenience, generally resulted in slightly slower acceleration and increased fuel consumption compared to the manual version.
Driving Characteristics
The 1.8i engine, paired with the manual transmission, provided adequate performance for everyday driving. Acceleration from 0-60 mph took around 9.5 seconds, and top speed was approximately 124 mph. While not a particularly sporty setup, it offered a reasonable balance between power and fuel efficiency. The automatic transmission version saw a slight decrease in acceleration, typically around 10 seconds for the 0-60 mph sprint. The engine’s torque curve was relatively flat, providing usable power across a wide range of engine speeds. However, it lacked the punch of the turbocharged or V6 variants available in the Astra Mk V range. The gear ratios in the five-speed manual were well-spaced, allowing for comfortable cruising and responsive acceleration. The automatic transmission, while smooth, could feel somewhat sluggish during quick overtaking maneuvers.
Equipment & Trim Levels
The Sport Hatch trim level, even with the 1.8i engine, offered a decent level of standard equipment. This typically included air conditioning, electric front windows, a CD player with radio, and central locking. Safety features such as ABS (Anti-lock Braking System) and driver/passenger airbags were also standard. Optional extras included alloy wheels, upgraded audio systems, and a sunroof. Interior upholstery was typically cloth, with a sporty design. The dashboard layout was functional and straightforward, with easy-to-read gauges and controls. Higher trim levels, such as the SRi, added features like sports suspension, upgraded seats, and more aggressive styling cues.
Chassis & Braking
The Astra Mk V utilized a MacPherson strut front suspension and a torsion beam rear suspension. This setup provided a good balance between ride comfort and handling. The front brakes were ventilated discs, offering good stopping power, while the rear brakes were solid discs. The steering was a rack and pinion system, providing precise and responsive steering feel. The 1.8i models typically came equipped with 205/55 R16 tires, providing adequate grip for most driving conditions. Stabilizer bars were fitted to both the front and rear axles, helping to reduce body roll during cornering.
Market Reception & Comparison
The Astra Mk V 1.8i Sport Hatch was generally well-received by automotive critics as a practical and affordable option. It was praised for its comfortable ride, decent fuel economy (around 30.5 US mpg combined), and reasonable performance. However, it was often criticized for lacking the excitement of the more powerful Astra variants. Compared to the 1.6-liter base models, the 1.8i offered a noticeable improvement in performance. Compared to the turbocharged 2.0-liter models (like the SRi), it was significantly less powerful but also more fuel-efficient and generally more reliable. The automatic transmission version was often seen as a compromise, offering convenience at the expense of performance and fuel economy.
Legacy
The Z18XE engine, found in the Astra Mk V 1.8i, is generally considered a reliable unit, although regular maintenance is crucial. Common issues include oil leaks and occasional problems with the throttle body. The Astra Mk V, as a whole, has proven to be a durable and relatively affordable used car. Today, these vehicles can be found at reasonable prices, making them attractive options for budget-conscious buyers. While not a collector’s item, the Astra Mk V 1.8i remains a practical and dependable choice for everyday transportation, and parts availability is generally good.
