The Vauxhall Astra Mk VII 1.4 EcoTec (150 hp) represents a significant iteration in the Astra lineage, produced between 2015 and 2019. Positioned as a mid-range offering within the Mk VII generation (introduced as the ‘J’ platform in Europe, and based on the GM Delta platform), this variant aimed to balance performance, fuel efficiency, and affordability. It served as a popular choice in the UK and European markets, offering a more spirited driving experience than the lower-powered engine options while remaining more accessible than the flagship trims. The Mk VII Astra represented a substantial redesign from its predecessor, focusing on weight reduction and improved interior quality.
Technical Specifications
| Brand | Vauxhall |
| Model | Astra |
| Generation | Astra Mk VII |
| Type (Engine) | 1.4 EcoTec (150 Hp) |
| Start of production | 2015 |
| End of production | 2019 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Hatchback |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 7.3 l/100 km (32.2 US mpg, 38.7 UK mpg, 13.7 km/l) |
| Fuel consumption (extra urban) | 4.5 l/100 km (52.3 US mpg, 62.8 UK mpg, 22.2 km/l) |
| Fuel consumption (combined) | 5.5 l/100 km (42.8 US mpg, 51.4 UK mpg, 18.2 km/l) |
| CO2 emissions | 128 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 8.3 sec |
| Acceleration 0 – 62 mph | 8.3 sec |
| Acceleration 0 – 60 mph | 7.9 sec |
| Maximum speed | 215 km/h (133.59 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 8 kg/Hp, 124.7 Hp/tonne |
| Weight-to-torque ratio | 4.9 kg/Nm, 203.7 Nm/tonne |
| Power | 150 Hp @ 5000-5600 rpm |
| Power per litre | 107.2 Hp/l |
| Torque | 245 Nm @ 2000-4000 rpm (180.7 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 | 5.1 l (5.39 US qt | 4.49 UK qt) |
| Kerb Weight | 1203 kg (2652.16 lbs.) |
| Max. weight | 1820 kg (4012.41 lbs.) |
| Max load | 617 kg (1360.25 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.) |
| Front track | 1547 mm (60.91 in.) |
| Rear (Back) track | 1565 mm (61.61 in.) |
| Front overhang | 960 mm (37.8 in.) |
| Rear overhang | 748 mm (29.45 in.) |
| Ride height (ground clearance) | 150 mm (5.91 in.) |
| Drag coefficient (Cd) | 0.31 |
| Minimum turning circle (turning diameter) | 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, manual 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; 225/45 R17 |
| Wheel rims size | 6.5 J x 16; 7.5 J x 17 |
Powertrain & Engine Architecture
At the heart of the Astra Mk VII 1.4 EcoTec is the B14XFT engine, a 1.4-liter turbocharged inline-four cylinder gasoline engine. This engine is part of GM’s Small Engine Family (SEF), designed for modularity and efficiency. The B14XFT utilizes direct injection, injecting fuel directly into the combustion chamber for improved fuel economy and reduced emissions. It also features a single-scroll turbocharger with an intercooler, boosting power output to 150 hp. The engine’s valvetrain employs double overhead camshafts (DOHC) with four valves per cylinder, optimizing airflow for enhanced performance. The engine is transversely mounted, driving the front wheels. The standard transmission for this variant was a six-speed manual gearbox, although a six-speed automatic transmission was also available as an option. The automatic transmission was designed to provide smooth shifts and contribute to overall fuel efficiency.
Driving Characteristics
The 1.4 EcoTec (150 hp) offered a noticeable step up in performance compared to the base 1.0-liter three-cylinder engine. While not a sports car, it provided adequate acceleration for everyday driving, with a 0-60 mph time of around 7.9 seconds. The turbocharger provided a noticeable boost in power during acceleration, making overtaking maneuvers relatively effortless. The six-speed manual transmission allowed drivers to maintain optimal engine speed for efficient cruising or spirited driving. Compared to the higher-output 1.6-liter turbo engine, the 1.4 felt less powerful, particularly at higher speeds. However, it offered a better balance between performance and fuel economy. The automatic transmission, while convenient, could sometimes feel hesitant during quick acceleration, and didn’t offer the same level of driver engagement as the manual.
Equipment & Trim Levels
The 1.4 EcoTec (150 hp) typically came equipped as a mid-range trim, often designated as ‘Design’ or ‘Tech Line’ depending on the specific market. Standard features generally included air conditioning, a touchscreen infotainment system with Bluetooth connectivity, alloy wheels, and electric windows. Higher trim levels offered additional features such as heated seats, a panoramic sunroof, and advanced safety systems like lane departure warning and automatic emergency braking. Interior upholstery was typically cloth, with options for leather upgrades. Dashboard configuration was generally straightforward and functional, with a focus on ergonomics.
Chassis & Braking
The Astra Mk VII utilized a MacPherson strut front suspension and a torsion beam rear suspension. This setup provided a good balance between ride comfort and handling. The 1.4 EcoTec variant typically featured ventilated front disc brakes and solid rear disc brakes. ABS (Anti-lock Braking System) was standard. Stabilizer bars were fitted to both the front and rear axles to reduce body roll during cornering. The suspension tuning was geared towards providing a comfortable ride for everyday driving, rather than outright sporty handling.
Market Reception & Comparison
The Astra Mk VII 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 that the engine could feel strained when fully loaded or driving uphill. Compared to the lower-powered 1.0-liter engine, the 1.4 offered a significant improvement in performance. Compared to the 1.6-liter turbo, it was seen as a more sensible choice for drivers prioritizing fuel economy and affordability. The automatic transmission was generally well-received, but some reviewers preferred the engagement of the manual gearbox.
Legacy
The B14XFT engine, while not without its quirks, proved to be a relatively reliable powertrain. Common issues included occasional turbocharger failures and oil leaks. However, with regular maintenance, these engines can provide many years of reliable service. In the used car market, the Astra Mk VII 1.4 EcoTec (150 hp) remains a popular choice due to its affordability, fuel efficiency, and practicality. It represents a well-rounded package for drivers seeking a comfortable and economical hatchback.
