The Vauxhall Astra Mk VI GTC 1.4 EcoFLEX (120 hp) was a front-wheel-drive, three-door hatchback produced between 2011 and 2015. Positioned as an entry-level to mid-range offering within the broader Mk VI GTC lineup, it aimed to provide a balance of fuel efficiency and reasonable performance. This variant was part of the Astra J series (Mk VI), specifically the GTC – Gran Turismo Coupe – body style, which emphasized a more sporty and stylish aesthetic compared to the five-door hatchback and estate versions. It utilized the General Motors Delta II platform, shared with other vehicles like the Chevrolet Cruze and Opel Astra.
| Brand | Vauxhall |
| Model | Astra |
| Generation | Astra Mk VI GTC |
| Type (Engine) | 1.4 EcoFLEX (120 Hp) |
| Start of production | 2011 |
| End of production | 2015 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Hatchback |
| Seats | 5 |
| Doors | 3 |
| Fuel consumption (urban) | 7.6 l/100 km (30.9 US mpg, 37.2 UK mpg, 13.2 km/l) |
| Fuel consumption (extra urban) | 4.9 l/100 km (48 US mpg, 57.6 UK mpg, 20.4 km/l) |
| Fuel consumption (combined) | 5.9 l/100 km (39.9 US mpg, 47.9 UK mpg, 16.9 km/l) |
| CO2 emissions | 139 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 10.4 sec |
| Acceleration 0 – 62 mph | 10.4 sec |
| Acceleration 0 – 60 mph | 9.9 sec |
| Maximum speed | 192 km/h (119.3 mph) |
| Weight-to-power ratio | 11 kg/Hp, 90.8 Hp/tonne |
| Weight-to-torque ratio | 6 kg/Nm, 166.5 Nm/tonne |
| Power | 120 Hp @ 4200-6000 rpm |
| Power per litre | 85.8 Hp/l |
| Torque | 220 Nm @ 1850-4900 rpm (162.26 lb.-ft. @ 1850-4900 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | A14NEL |
| Engine displacement | 1398 cm3 (85.31 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| 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 | 1321 kg (2912.31 lbs.) |
| Max. weight | 1881 kg (4146.9 lbs.) |
| Max load | 560 kg (1234.59 lbs.) |
| Trunk (boot) space – minimum | 371 l (13.1 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 | 1489 mm (58.62 in.) |
| Wheelbase | 2695 mm (106.1 in.) |
| Front track | 1585 mm (62.4 in.) |
| Rear track | 1588 mm (62.52 in.) |
| Minimum turning circle | 11.4 m (37.4 ft.) |
| Drivetrain | Front wheel drive |
| Number of gears | 6 |
| 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 |
Powertrain & Engine Architecture
The heart of the Astra GTC 1.4 EcoFLEX was the A14NEL engine, a 1.4-liter inline-four cylinder gasoline engine. This engine featured a single-scroll turbocharger with an intercooler, designed to boost power and improve efficiency. It employed multi-point fuel injection and a double overhead camshaft (DOHC) valvetrain with four valves per cylinder. The engine was tuned to produce 120 horsepower at 4200-6000 rpm and 220 Nm (162 lb-ft) of torque between 1850 and 4900 rpm. The six-speed manual transmission was the standard offering, providing a relatively long gearing setup aimed at maximizing fuel economy. The EcoFLEX designation indicated the inclusion of various fuel-saving technologies, such as start-stop functionality and optimized aerodynamics.
Driving Characteristics
The 1.4 EcoFLEX engine, paired with the six-speed manual gearbox, delivered adequate performance for everyday driving. Acceleration from 0-60 mph took approximately 9.9 seconds, and top speed was around 119 mph. While not a particularly sporty setup, the turbocharger provided a noticeable boost in power during overtaking maneuvers. The long gearing, while beneficial for fuel economy, meant that the engine sometimes felt strained when accelerating at higher speeds. Compared to the more powerful 1.6-liter and 2.0-liter turbocharged variants available in the GTC range, the 1.4 EcoFLEX offered a more relaxed and economical driving experience. The manual transmission provided a more engaging driving experience than the optional automatic, which was available on some other engine configurations.
Equipment & Trim Levels
The Astra GTC 1.4 EcoFLEX typically came with a reasonable level of standard equipment. This included air conditioning, electric front windows, a CD/MP3 stereo system, and alloy wheels. Safety features such as ABS, electronic stability control, and multiple airbags were also standard. Higher trim levels, such as Sport and Design, added features like climate control, upgraded upholstery, parking sensors, and a more sophisticated infotainment system. Optional extras included a panoramic sunroof, leather seats, and a navigation system. Interior upholstery was typically cloth, with a focus on durability rather than luxury.
Chassis & Braking
The Astra GTC 1.4 EcoFLEX utilized a MacPherson strut front suspension and a torsion beam rear suspension. The front brakes were ventilated discs, while the rear brakes were solid discs. The suspension setup was tuned for comfort and stability, providing a reasonably compliant ride. The steering was electrically assisted, offering a light and precise feel. The relatively low weight of the 1.4 EcoFLEX model, at around 1321 kg (2912 lbs), contributed to its nimble handling characteristics. Stabilizer bars were fitted front and rear to reduce body roll during cornering.
Market Reception & Comparison
The Astra GTC 1.4 EcoFLEX was generally well-received by critics as a practical and fuel-efficient option within the GTC range. Its combined fuel economy of around 40 mpg was a significant selling point. However, some reviewers noted that the engine lacked the outright performance of its larger counterparts. Compared to the 1.6-liter turbocharged engine, the 1.4 EcoFLEX offered better fuel economy but less power. The 2.0-liter turbocharged engine provided significantly more performance but at the expense of fuel efficiency. In terms of reliability, the A14NEL engine proved to be generally dependable, although some owners reported issues with the turbocharger and fuel injectors over the long term.
Legacy
The Vauxhall Astra Mk VI GTC 1.4 EcoFLEX remains a relatively affordable and practical used car option. The A14NEL engine, while not known for its exceptional performance, has proven to be reasonably durable with proper maintenance. Parts availability is generally good, and repair costs are typically moderate. The EcoFLEX model’s focus on fuel efficiency continues to appeal to buyers looking for an economical hatchback. However, potential buyers should be aware of the potential for turbocharger and fuel injector issues, and a thorough inspection is recommended before purchase. The GTC body style, with its sporty design, has also helped to maintain the model’s appeal in the used car market.
