The Opel Astra H GTC 2.0i 16V Turbo OPC, produced from November 2005 to 2006, represented the high-performance variant of the Astra H GTC (Grand Touring Coupe) model line. Positioned as the flagship within the third generation (H) Astra range, the OPC (Opel Performance Center) version aimed to deliver a more engaging driving experience compared to the standard Astra models. It was primarily marketed in Europe, offering a sporty alternative to rivals like the Volkswagen Golf GTI and Ford Focus ST. The GTC body style, a three-door hatchback, further emphasized the car’s dynamic intentions.
Technical Specifications
| Brand | Opel |
| Model | Astra |
| Generation | Astra H GTC |
| Type (Engine) | 2.0i 16V Turbo OPC (240 Hp) |
| Start of production | November, 2005 |
| End of production | 2006 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Hatchback |
| Seats | 5 |
| Doors | 3 |
| Fuel consumption (urban) | 13 l/100 km (18.1 US mpg, 21.7 UK mpg, 7.7 km/l) |
| Fuel consumption (extra urban) | 7 l/100 km (33.6 US mpg, 40.4 UK mpg, 14.3 km/l) |
| Fuel consumption (combined) | 9.2 l/100 km (25.6 US mpg, 30.7 UK mpg, 10.9 km/l) |
| CO2 emissions | 221 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 6.4 sec |
| Acceleration 0 – 62 mph | 6.4 sec |
| Acceleration 0 – 60 mph | 6.1 sec |
| Maximum speed | 244 km/h (151.61 mph) |
| Emission standard | Euro 4 |
| Weight-to-power ratio | 5.4 kg/Hp, 185.6 Hp/tonne |
| Weight-to-torque ratio | 4 kg/Nm, 247.5 Nm/tonne |
| Power | 240 Hp @ 5600 rpm |
| Power per litre | 120.1 Hp/l |
| Torque | 320 Nm @ 2400 rpm (236.02 lb.-ft. @ 2400 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | Z20LEH |
| 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 | 5 l (5.28 US qt | 4.4 UK qt) |
| Coolant | 7.7 l (8.14 US qt | 6.78 UK qt) |
| Kerb Weight | 1293 kg (2850.58 lbs.) |
| Max. weight | 1860 kg (4100.6 lbs.) |
| Max load | 567 kg (1250.02 lbs.) |
| Trunk (boot) space – minimum | 380 l (13.42 cu. ft.) |
| Fuel tank capacity | 52 l (13.74 US gal | 11.44 UK gal) |
| 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) | 119 mm (4.69 in.) |
| Drag coefficient (Cd) | 0.32 |
| 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 suspension | Independent coil spring |
| Rear suspension | Semi-independent, coil spring |
| Front brakes | Disc |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Tires size | 225/40 R18 |
| Wheel rims size | 18 |
Powertrain & Engine Architecture
The heart of the Astra H GTC OPC is the Z20LEH engine, a 2.0-liter turbocharged inline-four cylinder gasoline engine. This engine is a derivative of the Family 0 engines developed by Opel/Saab, and it features a cast iron block and an aluminum cylinder head. The Z20LEH utilizes a single scroll turbocharger with an intercooler to boost power output to 240 horsepower at 5600 rpm and 320 Nm (236 lb-ft) of torque at 2400 rpm. Fuel delivery is managed by a multi-port fuel injection system. The engine’s valvetrain consists of four valves per cylinder, contributing to its responsive nature. The sole transmission option was a Getrag M32 six-speed manual gearbox, chosen for its durability and direct feel. This transmission was well-suited to the engine’s power characteristics, providing precise gear changes and enhancing the driving experience.
Driving Characteristics
The Astra H GTC OPC delivers a noticeably more spirited driving experience than its naturally aspirated siblings. The turbocharger provides a surge of power in the mid-range, making overtaking and accelerating out of corners effortless. While not as brutally fast as some contemporary hot hatches, the OPC offers a good balance between performance and usability. The six-speed manual transmission is well-matched to the engine, with relatively short throws and a positive feel. The suspension is firmer than the standard Astra, providing improved body control and reduced roll in corners. However, this comes at the expense of some ride comfort. Compared to the 1.8-liter versions, the OPC offers significantly more power and torque, resulting in much quicker acceleration and a higher top speed. The 1.8L models, while more fuel-efficient, lacked the punch and responsiveness of the OPC.
Equipment & Trim Levels
The Astra H GTC OPC came generously equipped as standard. Key features included sport seats upholstered in a unique cloth/leather combination, a leather-wrapped steering wheel, air conditioning, and an upgraded audio system. Exterior styling cues included a distinctive front bumper with large air intakes, side skirts, a rear spoiler, and 18-inch alloy wheels. Optional extras included Recaro sports seats, xenon headlights, and a panoramic sunroof. The interior featured aluminum trim accents and a sporty instrument cluster. The OPC trim level was the highest available on the GTC, offering a more premium feel than the base or mid-range Astra models.
Chassis & Braking
The Astra H GTC OPC featured a modified chassis compared to the standard Astra GTC. The suspension was lowered and stiffened, and thicker stabilizer bars were fitted to reduce body roll. The braking system was also upgraded, with larger front disc brakes and ventilated rear discs. Anti-lock braking system (ABS) was standard. The steering was direct and responsive, providing good feedback to the driver. The car’s relatively lightweight construction (1293 kg / 2850.58 lbs) contributed to its agile handling. The suspension setup, while firm, provided a reasonable compromise between performance and comfort for everyday driving.
Market Reception & Comparison
The Astra H GTC OPC was generally well-received by automotive critics. It was praised for its strong performance, engaging handling, and distinctive styling. However, some reviewers noted that the ride could be a bit harsh on rough roads. Compared to rivals like the Volkswagen Golf GTI and Ford Focus ST, the OPC offered a slightly more raw and visceral driving experience. Fuel economy was reasonable for a performance car, averaging around 25.6 US mpg in combined driving. Reliability was generally good, although some owners reported minor issues with the turbocharger and ignition system. The OPC represented a compelling alternative for buyers seeking a sporty and practical hatchback.
Legacy
The Astra H GTC OPC remains a popular choice among enthusiasts today. The Z20LEH engine is known for its durability and tunability, and many owners have modified their cars to increase power output. The OPC’s relatively simple mechanical design makes it easier to maintain and repair compared to some more complex modern performance cars. While not as common as some of its rivals, the Astra H GTC OPC has developed a loyal following and is considered a desirable used car. Its combination of performance, practicality, and affordability has ensured its place as a memorable hot hatch of the mid-2000s.
