The Opel Astra K 1.6d (136 Hp) Automatic, produced from 2018 to July 2019, represents a significant offering within the broader Astra K generation (launched in 2015). Positioned as a mid-range variant, it aimed to balance fuel efficiency with acceptable performance for everyday driving. The Astra K, built on the GM’s Delta platform, was Opel’s attempt to create a more refined and technologically advanced compact hatchback, competing directly with models like the Volkswagen Golf, Ford Focus, and Peugeot 308 in the European market. This specific 1.6-liter diesel automatic configuration was designed to appeal to buyers prioritizing comfort and economy over outright sportiness.
Technical Specifications
| Brand | Opel |
| Model | Astra |
| Generation | Astra K |
| Type (Engine) | 1.6d (136 Hp) Automatic |
| Start of production | 2018 |
| End of production | July, 2019 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Hatchback |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 5.9-6.1 l/100 km (39.9 – 38.6 US mpg) |
| Fuel consumption (extra urban) | 3.9-4.2 l/100 km (60.3 – 56 US mpg) |
| Fuel consumption (combined) | 4.6-4.9 l/100 km (51.1 – 48 US mpg) |
| CO2 emissions | 122-130 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 9.4 sec |
| Acceleration 0 – 62 mph | 9.4 sec |
| Acceleration 0 – 60 mph | 8.9 sec |
| Maximum speed | 213 km/h (132.35 mph) |
| Emission standard | Euro 6d-Temp |
| Weight-to-power ratio | 9.7 kg/Hp |
| Weight-to-torque ratio | 4.1 kg/Nm |
| Power | 136 Hp @ 3500-4000 rpm |
| Torque | 320 Nm @ 2000-2250 rpm (236.02 lb.-ft. @ 2000-2250 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | D16DTH |
| Engine displacement | 1598 cm3 (97.52 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 79.7 mm (3.14 in.) |
| Piston Stroke | 80.1 mm (3.15 in.) |
| Compression ratio | 16:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Engine oil capacity | 5 l (5.28 US qt | 4.4 UK qt) |
| Kerb Weight | 1318 kg (2905.69 lbs.) |
| Max. weight | 1920 kg (4232.88 lbs.) |
| Max load | 602 kg (1327.18 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) |
| AdBlue tank | 13.5 l (3.57 US gal | 2.97 UK gal) |
| Max. roof load | 75 kg (165.35 lbs.) |
| Permitted trailer load with brakes (12%) | 1700 kg (3747.86 lbs.) |
| Permitted trailer load without brakes | 670 kg (1477.1 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.) |
| Minimum turning circle | 11.05 m (36.25 ft.) |
| Drivetrain Architecture | Front wheel drive |
| Number of gears and type of gearbox | 6 gears, automatic transmission |
| Front brakes | Disc |
| Rear brakes | Disc |
| Tires size | 205/55 R16; 225/40 R18 |
| Wheel rims size | 6.5J x 16; 7J x 16; 7.5 x 18 |
Powertrain & Engine Architecture
The heart of the Astra K 1.6d Automatic is the D16DTH engine, a 1.6-liter inline-four cylinder diesel. This engine is part of Opel’s ‘Whisper Diesel’ family, known for its relatively quiet operation and focus on fuel efficiency. It utilizes a common-rail direct injection system, delivering fuel at extremely high pressure for optimized combustion. A turbocharger with an intercooler is employed to boost power output, providing 136 horsepower at 3500-4000 rpm and a substantial 320 Nm (236 lb-ft) of torque between 2000-2250 rpm. The engine also incorporates a diesel particulate filter (DPF) to meet stringent Euro 6d-Temp emission standards. The automatic transmission is a six-speed unit, designed to provide smooth shifts and contribute to the car’s overall refinement. While not a dual-clutch transmission, it offers a comfortable driving experience, particularly in urban environments.
Driving Characteristics
The 1.6d Automatic Astra K delivers a comfortable and relaxed driving experience. The 136 hp engine, while not particularly powerful, provides adequate acceleration for most driving situations. The 0-60 mph time of around 8.9 seconds is respectable for a diesel-powered hatchback. The automatic transmission is tuned for economy, meaning it upshifts quickly to maintain low engine speeds. This contributes to good fuel economy but can sometimes feel sluggish when requiring more urgent acceleration. Compared to the more powerful 1.4-liter turbocharged petrol versions, the 1.6d Automatic feels less responsive. However, it offers significantly better fuel economy and a wider torque band, making it easier to drive in everyday traffic. The gear ratios are optimized for cruising, allowing for relaxed highway driving with minimal engine noise.
Equipment & Trim Levels
The Astra K 1.6d Automatic typically came equipped with a reasonable level of standard features. These included air conditioning, a touchscreen infotainment system with Bluetooth connectivity, alloy wheels, and a suite of safety features such as ABS, ESP (Electronic Stability Program), and multiple airbags. Higher trim levels, such as ‘Sportive’ or ‘Elite’, added features like heated seats, a larger touchscreen display, parking sensors, and advanced driver assistance systems like lane departure warning and automatic emergency braking. Interior upholstery was typically cloth, with leather options available on higher trims. Dashboard design 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 discs, while the rear brakes are also discs, providing adequate stopping power for the vehicle’s weight. Electric power steering is standard, offering light and precise steering feel. Stabilizer bars are fitted to both the front and rear axles to reduce body roll during cornering. The suspension tuning is geared towards comfort, resulting in a relatively soft ride quality.
Market Reception & Comparison
The Opel Astra K 1.6d Automatic was generally well-received by automotive critics. It was praised for its fuel efficiency, comfortable ride, and refined interior. However, some critics noted that the engine lacked the punch of its petrol counterparts and that the automatic transmission could feel hesitant at times. Compared to the 1.4-liter petrol versions, the 1.6d Automatic offered significantly better fuel economy (around 4.6-4.9 l/100km vs. 5.8-6.5 l/100km for the petrol) but slower acceleration. In terms of reliability, the D16DTH engine has proven to be generally robust, although owners should be mindful of maintaining the DPF system to avoid potential issues.
Legacy
The Opel Astra K 1.6d Automatic remains a popular choice in the used car market, particularly for buyers seeking a fuel-efficient and comfortable compact hatchback. The D16DTH engine, when properly maintained, is known for its longevity. Common issues are typically related to the DPF system, which can become clogged if the vehicle is primarily used for short journeys. Overall, the Astra K 1.6d Automatic represents a solid and dependable option for those seeking a practical and economical vehicle.
