The Opel Astra K 1.4 EcoTec (150 hp) ecoFLEX start&stop, produced from 2015 to 2018, represented a significant offering within the Astra K generation (2015-2019). Positioned as a mid-range trim, it aimed to balance performance, fuel efficiency, and affordability within the compact hatchback segment. This variant played a key role in Opel’s strategy to modernize the Astra, leveraging new engine technology and a lighter platform to compete with rivals like the Volkswagen Golf, Ford Focus, and Peugeot 308. The Astra K, built on the GM’s Delta platform, represented a departure from previous generations, focusing on a more refined driving experience and improved interior quality.
Technical Specifications
| Brand | Opel |
| Model | Astra |
| Generation | Astra K |
| Type (Engine) | 1.4 EcoTec (150 Hp) ecoFLEX 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) | 6.2 – 6.3 l/100 km (37.9 – 37.3 US mpg) |
| Fuel consumption (extra urban) | 4.2 – 4.3 l/100 km (56 – 54.7 US mpg) |
| Fuel consumption (combined) | 4.9 – 5.1 l/100 km (48 – 46.1 US mpg) |
| CO2 emissions | 117 – 114 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 8.5 sec |
| Acceleration 0 – 62 mph | 8.5 sec |
| Acceleration 0 – 60 mph | 8.1 sec |
| Maximum speed | 215 km/h (133.59 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 8 kg/Hp |
| Weight-to-torque ratio | 5.2 kg/Nm |
| Power | 150 Hp @ 5000-5600 rpm |
| 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 |
| Fuel injection system | Direct injection |
| Engine aspiration | Turbocharger, Intercooler |
| Engine oil capacity | 4 l (4.23 US qt | 3.52 UK qt) |
| Coolant capacity | 5.1 l (5.39 US qt | 4.49 UK qt) |
| Kerb Weight | 1203 kg (2652.16 lbs.) |
| Max. weight | 1815 kg (4001.39 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%) | 1450 kg (3196.7 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.) |
| Minimum turning circle | 11.05 m (36.25 ft.) |
| Drivetrain Architecture | Front wheel drive |
| Number of gears and type of gearbox | 6 gears, manual transmission |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Tires size | 205/55 R16; 225/45 R17 |
| Wheel rims size | 6.5J x 16; 7.5J x 17 |
Powertrain & Engine Architecture
The heart of the Astra K 1.4 EcoTec was the B14XFT engine, a 1.4-liter turbocharged inline-four cylinder gasoline engine. This engine was part of Opel’s ‘EcoTec’ family, designed for efficiency and reduced emissions. It featured direct fuel injection, a relatively high compression ratio of 10:1, and a single-scroll turbocharger with an intercooler. The direct injection system allowed for precise fuel delivery, optimizing combustion and contributing to improved fuel economy. The engine utilized a timing chain, intended to reduce maintenance compared to timing belts. The 150 hp output was achieved between 5000 and 5600 rpm, while peak torque of 230 Nm (169.64 lb-ft) was available from 2000 to 4000 rpm. This broad torque curve aimed to provide good responsiveness in everyday driving situations. The engine was paired with a six-speed manual transmission, delivering power to the front wheels. While an automatic transmission was available on other Astra K trims, the 150 hp version was primarily offered with the manual gearbox.
Driving Characteristics
The 1.4 EcoTec 150 hp variant offered a balanced driving experience. Acceleration from 0 to 60 mph took approximately 8.1 seconds, making it reasonably quick for a compact hatchback. The turbocharger provided a noticeable boost in power during acceleration, but turbo lag was present, particularly at lower engine speeds. The six-speed manual transmission allowed drivers to keep the engine in its optimal power band. Compared to the lower-powered 1.0-liter EcoTec engine, the 1.4 offered significantly more performance, making it better suited for highway driving and overtaking maneuvers. However, it didn’t match the outright performance of the Astra K’s more powerful options, such as the 1.6-liter diesel or the higher-output gasoline engines. The steering was generally well-weighted, providing a decent level of feedback, and the suspension offered a comfortable ride without feeling overly soft.
Equipment & Trim Levels
The 1.4 EcoTec (150 hp) ecoFLEX start&stop typically came equipped as part of the ‘Design’ or ‘Edition’ trim levels in many European markets. Standard features included air conditioning, a touchscreen infotainment system with Bluetooth connectivity, alloy wheels, and a suite of safety features such as ABS, ESP, and multiple airbags. Optional extras included a navigation system, heated seats, parking sensors, and advanced driver-assistance systems like lane departure warning and automatic emergency braking. Interior upholstery was typically cloth, with the option of leather upgrades. The dashboard layout was modern and functional, with a focus on ergonomics and ease of use.
Chassis & Braking
The Astra K 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, while the rear brakes were solid discs. ABS (Anti-lock Braking System) and ESP (Electronic Stability Program) were standard features, enhancing safety and stability. The steering system employed an electric power steering rack and pinion, offering precise control and reduced weight. Tire sizes varied depending on the trim level, with 205/55 R16 and 225/45 R17 being common options.
Market Reception & Comparison
The Astra K 1.4 EcoTec (150 hp) received generally positive reviews from automotive critics. It was praised for its fuel efficiency, comfortable ride, and well-equipped interior. However, some critics noted the presence of turbo lag and the lack of an automatic transmission option. Compared to the 1.0-liter EcoTec version, the 1.4 offered a noticeable performance improvement, making it a more appealing choice for drivers who frequently travel on highways or carry passengers. In terms of fuel economy, it was comparable to other 1.4-liter turbocharged engines in the segment. Reliability reports were generally favorable, with few major issues reported.
Legacy
The Opel Astra K 1.4 EcoTec (150 hp) remains a popular choice in the used car market. The B14XFT engine has proven to be relatively reliable, although regular maintenance is essential. Common issues include occasional turbocharger problems and oil leaks. The Astra K’s modern design, comfortable interior, and good fuel economy continue to appeal to buyers looking for a practical and affordable compact hatchback. Its position as a mid-range trim offers a good balance of features and performance, making it a versatile option for a wide range of drivers.
