The Opel Astra K 1.4 EcoTec (150 hp) ecoFLEX Automatic start&stop represents a significant iteration within the Astra K generation, produced from 2015 to 2018. Positioned as a mid-range offering, this variant aimed to balance fuel efficiency with respectable performance, appealing to buyers seeking a comfortable and practical hatchback. It was a key model in Opel’s lineup during a period focused on downsizing and incorporating fuel-saving technologies, particularly within the European market. The Astra K, built on the General Motors Delta platform, represented a substantial redesign from its predecessor, emphasizing weight reduction and a more refined driving experience.
Technical Specifications
| Brand | Opel |
| Model | Astra |
| Generation | Astra K |
| Type (Engine) | 1.4 EcoTec (150 Hp) ecoFLEX Automatic start&stop |
| Start of production | 2015 |
| End of production | 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Hatchback |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 7.1 l/100 km (33.1 US mpg, 39.8 UK mpg, 14.1 km/l) |
| Fuel consumption (extra urban) | 4.4 l/100 km (53.5 US mpg, 64.2 UK mpg, 22.7 km/l) |
| Fuel consumption (combined) | 5.4 l/100 km (43.6 US mpg, 52.3 UK mpg, 18.5 km/l) |
| CO2 emissions | 124 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 8.9 sec |
| Acceleration 0 – 62 mph | 8.9 sec |
| Acceleration 0 – 60 mph | 8.5 sec |
| Maximum speed | 210 km/h (130.49 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 8.2 kg/Hp, 121.7 Hp/tonne |
| Weight-to-torque ratio | 5.4 kg/Nm, 186.5 Nm/tonne |
| Power | 150 Hp @ 5000-5600 rpm |
| Power per litre | 107.2 Hp/l |
| Torque | 230 Nm @ 2000-4000 rpm (169.64 lb.-ft. @ 2000-4000 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | B14XFT |
| Engine displacement | 1399 cm3 (85.37 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 74 mm (2.91 in.) |
| Piston Stroke | 81.3 mm (3.2 in.) |
| Compression ratio | 10:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Turbocharger, Intercooler |
| Engine oil capacity | 4 l (4.23 US qt | 3.52 UK qt) |
| Coolant | 5.1 l (5.39 US qt | 4.49 UK qt) |
| Kerb Weight | 1233 kg (2718.3 lbs.) |
| Max. weight | 1845 kg (4067.53 lbs.) |
| Max load | 612 kg (1349.23 lbs.) |
| Trunk (boot) space – minimum | 370 l (13.07 cu. ft.) |
| Trunk (boot) space – maximum | 1210 l (42.73 cu. ft.) |
| Fuel tank capacity | 48 l (12.68 US gal | 10.56 UK gal) |
| Max. roof load | 75 kg (165.35 lbs.) |
| Permitted trailer load with brakes (12%) | 750 kg (1653.47 lbs.) |
| Permitted trailer load without brakes | 620 kg (1366.87 lbs.) |
| Length | 4370 mm (172.05 in.) |
| Width | 1809 mm (71.22 in.) |
| Width with mirrors folded | 1871 mm (73.66 in.) |
| Width including mirrors | 2042 mm (80.39 in.) |
| Height | 1485 mm (58.46 in.) |
| Wheelbase | 2662 mm (104.8 in.) |
| Front track | 1548 mm (60.94 in.) |
| Rear (Back) track | 1565 mm (61.61 in.) |
| Minimum turning circle | 11.05 m (36.25 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 | 6 gears, automatic 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 | 6J x 15 |
Powertrain & Engine Architecture
At the heart of the Astra K 1.4 EcoTec lies the B14XFT engine, a 1.4-liter turbocharged inline-four cylinder gasoline engine. This engine is part of Opel’s ‘EcoTec’ family, designed for efficiency and reduced emissions. The B14XFT utilizes direct fuel injection, a technology that precisely meters fuel directly into the combustion chamber, improving combustion efficiency and reducing knocking. The engine also features a turbocharger with an intercooler, which forces more air into the cylinders, boosting power output. The valvetrain employs four valves per cylinder, enhancing breathing and contributing to the engine’s overall performance. The engine is paired with a six-speed automatic transmission, designed to provide smooth gear changes and optimize fuel economy. This transmission isn’t known for particularly sporty shifts, but rather prioritizes comfort and efficiency.
Driving Characteristics
The 150 hp and 230 Nm (169.64 lb-ft) of torque delivered by the 1.4 EcoTec engine, when coupled with the six-speed automatic, provides adequate performance for everyday driving. Acceleration from 0-60 mph takes around 8.5 seconds, and the car has a top speed of 130.49 mph. However, compared to manual transmission versions or higher-output Astra K models (like those with the 1.6 Diesel), this variant feels less responsive. The automatic transmission, while smooth, can sometimes hesitate during quick acceleration or downshifts. The gear ratios are tuned for fuel economy, meaning the engine can feel strained when climbing hills or overtaking at higher speeds. Overall, the driving experience is comfortable and refined, but not particularly engaging for enthusiasts.
Equipment & Trim Levels
The Astra K 1.4 EcoTec Automatic typically came equipped with a reasonable level of standard features. These included air conditioning, power windows, power mirrors, a basic infotainment system with Bluetooth connectivity, and alloy wheels. Higher trim levels, such as ‘Sport’ or ‘Elite’, added features like a larger touchscreen display, navigation system, heated seats, parking sensors, and advanced safety systems like lane departure warning and automatic emergency braking. Interior upholstery was typically cloth, with leather options available on higher trims. The dashboard layout was modern and functional, with a focus on ergonomics.
Chassis & Braking
The Astra K utilizes a MacPherson strut front suspension and a torsion beam rear suspension. This setup provides a good balance between ride comfort and handling. The front brakes are ventilated discs, while the rear brakes are solid discs. ABS (Anti-lock Braking System) is standard. The suspension tuning is geared towards comfort, resulting in a relatively soft ride. Stabilizer bars are fitted to both the front and rear axles to reduce body roll during cornering. The steering is electrically assisted, providing light and precise control.
Market Reception & Comparison
The Astra K 1.4 EcoTec Automatic was generally well-received by critics as a practical and fuel-efficient hatchback. However, some reviewers noted that the engine could feel underpowered at times, especially when fully loaded or driving uphill. Compared to the 1.6-liter diesel variants, the 1.4 EcoTec offered less torque but a smoother and quieter driving experience. Fuel economy was a strong point, with combined figures around 43.6 US mpg. Reliability has been generally good, although some owners have reported minor issues with the turbocharger and automatic transmission.
Legacy
The Opel Astra K 1.4 EcoTec Automatic remains a popular choice in the used car market, particularly for buyers seeking a reliable and affordable hatchback. The B14XFT engine, while not known for its exceptional performance, has proven to be relatively durable with proper maintenance. The six-speed automatic transmission is generally reliable, but regular fluid changes are essential. The Astra K’s focus on weight reduction and fuel efficiency has contributed to its enduring appeal, making it a sensible and economical option for everyday transportation.
