The Vauxhall Astra Mk VII 1.4 EcoTec (125 hp) represents a significant iteration in the Astra lineage, produced between 2015 and 2019. Positioned as a mainstream offering within the Mk VII range (which spanned from 2015-2019, based on the GM Delta platform), this variant aimed to balance fuel efficiency with acceptable performance for everyday driving. It served as a key volume seller, appealing to buyers seeking a practical and economical hatchback. The 1.4 EcoTec engine, coupled with a six-speed manual transmission, was a popular choice in the UK and European markets, offering a compromise between the base 1.0L engine and the more powerful 1.6L variants.
Technical Specifications
| Brand | Vauxhall |
| Model | Astra |
| Generation | Astra Mk VII |
| Type (Engine) | 1.4 EcoTec (125 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 | 9.2 sec |
| Acceleration 0 – 62 mph | 9.2 sec |
| Acceleration 0 – 60 mph | 8.7 sec |
| Maximum speed | 204 km/h (126.76 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 9.6 kg/Hp, 103.9 Hp/tonne |
| Weight-to-torque ratio | 4.9 kg/Nm, 203.7 Nm/tonne |
| Power | 125 Hp @ 5600 rpm |
| Power per litre | 89.3 Hp/l |
| Torque | 245 Nm @ 2000-3500 rpm (180.7 lb.-ft. @ 2000-3500 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | B14XFL |
| 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 | 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 | 1544 mm (60.79 in.) |
| Rear (Back) track | 1558 mm (61.34 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 |
| Wheel rims size | 6 J x 15 |
INTRODUCTION
The Vauxhall Astra Mk VII 1.4 EcoTec (125 hp) was a key component of the seventh-generation Astra lineup, launched in 2015. Built on the General Motors Delta platform, the Mk VII represented a significant step forward in terms of technology, safety, and refinement compared to its predecessor. This particular variant, powered by the 1.4-liter turbocharged engine and paired with a six-speed manual gearbox, was designed to appeal to a broad customer base seeking a balance between economy, performance, and practicality. It occupied a mid-range position in the Astra Mk VII portfolio, offering more power than the entry-level 1.0L models but remaining more affordable than the higher-specification 1.6L diesel or petrol options.
Powertrain & Engine Architecture
The heart of this Astra variant is the B14XFL 1.4-liter turbocharged four-cylinder engine. This engine is part of Vauxhall/Opel’s ‘EcoTec’ family, emphasizing efficiency and reduced emissions. It features direct fuel injection, a single-scroll turbocharger, and variable valve timing (VVT) on both the intake and exhaust camshafts. The engine’s architecture is relatively compact, allowing for transverse mounting in the front-wheel-drive chassis. The six-speed manual transmission provides precise gear changes and contributes to the car’s overall responsiveness. The gear ratios are tuned for a balance of acceleration and fuel economy, with a relatively long sixth gear for efficient cruising. The engine management system is sophisticated, optimizing fuel delivery and ignition timing based on driving conditions.
Driving Characteristics
The 1.4 EcoTec (125 hp) Astra Mk VII delivers a competent and generally enjoyable driving experience. While not overtly sporty, the engine provides sufficient power for everyday driving, with a noticeable surge of torque from around 2000 rpm thanks to the turbocharger. Acceleration to 60 mph takes approximately 8.7 seconds, which is respectable for a car in this class. The six-speed manual gearbox is well-matched to the engine, allowing drivers to keep the engine in its optimal power band. Compared to the lower-powered 1.0L models, the 1.4 feels significantly more relaxed on the motorway and offers more confident overtaking capability. However, it doesn’t possess the outright punch of the 1.6L variants. The steering is precise and well-weighted, providing good feedback to the driver. The suspension is tuned for comfort, absorbing bumps and imperfections in the road surface effectively.
Equipment & Trim Levels
The Astra Mk VII 1.4 EcoTec (125 hp) typically came equipped with a reasonable level of standard equipment. This included air conditioning, electric front windows, a USB audio interface, and a basic infotainment system. Higher trim levels, such as ‘Tech Line’ or ‘Sportive’, added features like alloy wheels, cruise control, a more advanced infotainment system with touchscreen display, and parking sensors. Interior upholstery was typically cloth, with options for upgraded materials on higher trims. Dashboard design was modern and functional, with a clear instrument cluster and logically arranged controls. Optional extras included a panoramic sunroof, heated seats, and a navigation system.
Chassis & Braking
The Astra Mk VII utilizes a MacPherson strut front suspension and a torsion beam rear suspension. This configuration provides a good balance of ride comfort and handling. The front brakes are ventilated discs, while the rear brakes are solid discs, providing adequate stopping power for the car’s weight and performance. Anti-lock Braking System (ABS) is standard, enhancing safety during emergency braking situations. The chassis is relatively lightweight, contributing to the car’s agility and fuel efficiency. Stabilizer bars are fitted to both the front and rear axles to reduce body roll during cornering.
Market Reception & Comparison
The Astra Mk VII 1.4 EcoTec (125 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 a little strained when fully loaded or driving uphill. Compared to the 1.0L models, the 1.4 offered a noticeable improvement in performance, making it a more suitable choice for drivers who frequently undertake longer journeys or carry passengers. In terms of reliability, the 1.4 EcoTec engine proved to be generally dependable, although some owners have reported issues with the turbocharger and direct injection system. Fuel economy figures were competitive, averaging around 42.8 US mpg in combined driving.
Legacy
The Vauxhall Astra Mk VII 1.4 EcoTec (125 hp) remains a popular choice in the used car market. Its combination of affordability, fuel efficiency, and practicality makes it an attractive option for budget-conscious buyers. The 1.4 EcoTec engine, while not without its potential issues, is generally considered to be a reliable unit when properly maintained. Parts availability is good, and servicing costs are relatively reasonable. The Mk VII Astra, in general, has established a reputation as a well-rounded and dependable family hatchback, and the 1.4 EcoTec variant continues to offer good value for money.
