The Opel Astra J GTC 1.4 (100 hp) Ecotec start/stop was a front-wheel-drive, three-door hatchback produced between 2011 and 2013. It represented an entry-level offering within the broader Astra J GTC range, which included more powerful engine options and higher trim levels. Positioned as a fuel-efficient and accessible variant, it aimed to attract buyers seeking a stylish and practical compact car with lower running costs. The GTC, signifying “Gran Turismo Coupe,” was Opel’s sporty three-door version of the Astra J, emphasizing a more dynamic driving experience and a sleeker profile compared to the five-door hatchback.
Technical Specifications
| Brand | Opel |
| Model | Astra |
| Generation | Astra J GTC |
| Type (Engine) | 1.4 (100 Hp) Ecotec start/stop |
| Start of production | 2011 |
| End of production | 2013 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Hatchback |
| Seats | 5 |
| Doors | 3 |
| Fuel consumption (urban) | 7.2 l/100 km (32.7 US mpg) |
| Fuel consumption (extra urban) | 5.2 l/100 km (45.2 US mpg) |
| Fuel consumption (combined) | 5.9 l/100 km (39.9 US mpg) |
| CO2 emissions | 139 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 14.5 sec |
| Acceleration 0 – 62 mph | 14.5 sec |
| Acceleration 0 – 60 mph | 13.8 sec |
| Maximum speed | 178 km/h (110.6 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 14.4 kg/Hp |
| Weight-to-torque ratio | 11.1 kg/Nm |
| Power | 100 Hp @ 6000 rpm |
| Torque | 130 Nm @ 6000 rpm (95.88 lb.-ft. @ 6000 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | A14XER |
| Engine displacement | 1398 cm3 (85.31 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 73.4 mm (2.89 in.) |
| Piston Stroke | 82.6 mm (3.25 in.) |
| Compression ratio | 10.5:1 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Engine oil capacity | 4 l (4.23 US qt | 3.52 UK qt) |
| Coolant capacity | 6.2 l (6.55 US qt | 5.46 UK qt) |
| Kerb Weight | 1437 kg (3168.04 lbs.) |
| Max. weight | 1940 kg (4276.97 lbs.) |
| Max load | 503 kg (1108.93 lbs.) |
| Trunk (boot) space – minimum | 380 l (13.42 cu. ft.) |
| Trunk (boot) space – maximum | 1165 l (41.14 cu. ft.) |
| Fuel tank capacity | 56 l (14.79 US gal | 12.32 UK gal) |
| Length | 4466 mm (175.83 in.) |
| Width | 1840 mm (72.44 in.) |
| Width including mirrors | 2020 mm (79.53 in.) |
| Height | 1482 mm (58.35 in.) |
| Wheelbase | 2695 mm (106.1 in.) |
| Front track | 1584 mm (62.36 in.) |
| Rear (Back) track | 1588 mm (62.52 in.) |
| Ride height (ground clearance) | 112 mm (4.41 in.) |
| Drag coefficient (Cd) | 0.31 |
| Minimum turning circle | 11.4 m (37.4 ft.) |
| Drivetrain Architecture | Front wheel drive |
| Number of gears | 5 |
| Gearbox type | Manual transmission |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 235/55 R17 |
| Wheel rims size | 17 |
Powertrain & Engine Architecture
The Astra J GTC 1.4 Ecotec utilized the A14XER engine code, a 1.4-liter (1398 cc) inline-four cylinder gasoline engine. This engine was part of Opel’s Ecotec family, known for its focus on efficiency and reduced emissions. It featured multi-port fuel injection and a naturally aspirated design, producing 100 horsepower at 6000 rpm and 130 Nm (95.88 lb-ft) of torque at 6000 rpm. The engine incorporated a timing chain for durability and a relatively high compression ratio of 10.5:1. A key feature of this variant was the Start/Stop system, designed to automatically shut off the engine when the vehicle came to a halt (e.g., at traffic lights) to conserve fuel. The engine was transversely mounted at the front of the vehicle. The standard transmission was a five-speed manual gearbox, optimized for fuel economy rather than outright performance.
Driving Characteristics
The 1.4-liter, 100 hp engine paired with the five-speed manual transmission delivered modest performance. Acceleration from 0 to 100 km/h (0-62 mph) took approximately 14.5 seconds, and the top speed was around 178 km/h (110.6 mph). The power delivery was relatively linear, but the engine felt strained at higher speeds or when carrying a full load. The gear ratios were geared towards maximizing fuel efficiency, meaning the engine didn’t offer particularly strong acceleration in higher gears. Compared to the more powerful 1.6-liter or turbocharged 1.4-liter variants, the 1.4 Ecotec felt noticeably slower. However, it provided adequate power for everyday driving and urban commutes. The steering was light and precise, contributing to a comfortable driving experience.
Equipment & Trim Levels
The Astra J GTC 1.4 Ecotec start/stop typically came with a base level of equipment. Standard features included air conditioning, electric front windows, a basic audio system with USB connectivity, and ABS brakes. Safety features such as front and side airbags were also standard. Interior upholstery was typically cloth, and the dashboard featured a functional but relatively simple design. Optional extras included alloy wheels, upgraded audio systems, parking sensors, and a panoramic sunroof. Trim levels varied slightly depending on the market, but generally, this variant represented the entry point into the GTC range.
Chassis & Braking
The Astra J GTC featured a MacPherson strut front suspension and a torsion beam rear suspension. The torsion beam rear setup was a cost-effective solution commonly used in compact cars. The front brakes were ventilated discs, providing adequate stopping power, while the rear brakes were solid discs. The steering utilized an electric power steering system, offering a lighter feel and improved fuel efficiency compared to hydraulic systems. The suspension was tuned for comfort, providing a reasonably smooth ride, although it wasn’t as sporty as the suspension found in higher-performance GTC models. The car’s curb weight of 1437 kg (3168.04 lbs) contributed to its moderate handling characteristics.
Market Reception & Comparison
The Astra J GTC 1.4 Ecotec start/stop was generally well-received as an affordable and fuel-efficient option within the GTC lineup. Critics praised its low running costs and comfortable ride, but noted its lack of outright performance. Compared to the 1.6-liter variant, the 1.4 offered better fuel economy but significantly less power. The 1.4 Turbo models provided a more engaging driving experience but came at a higher price point. In terms of reliability, the A14XER engine was generally considered to be reasonably dependable, although some owners reported issues with the Start/Stop system and occasional oil consumption. Fuel economy figures of around 5.9 l/100 km (39.9 US mpg) were competitive for its class.
Legacy
The Opel Astra J GTC 1.4 Ecotec start/stop remains a relatively common sight on the used car market. Its affordability and fuel efficiency continue to appeal to budget-conscious buyers. While not known for its blistering performance, the powertrain has proven to be reasonably durable with proper maintenance. The Start/Stop system, while beneficial for fuel economy, can be a potential source of issues as it ages. Overall, this variant represents a practical and economical choice for those seeking a stylish and reliable compact hatchback.
