The Opel Adam Rocks 1.0 ECOTEC (90 hp) was a subcompact city car produced by Opel from 2014 to 2018. Positioned as a more rugged and stylish variant of the standard Opel Adam, the Rocks featured a slightly raised ride height, protective cladding, and a convertible-style roll-top canvas roof. This particular engine and transmission combination – the 1.0-liter turbocharged three-cylinder engine paired with a six-speed manual gearbox – represented an entry-level offering within the Adam Rocks lineup, aimed at buyers prioritizing fuel efficiency and affordability. It was primarily marketed in Europe, where the subcompact segment is particularly popular.
Technical Specifications
| Brand | Opel |
| Model | Adam |
| Generation | Adam |
| Type (Engine) | Rocks 1.0 ECOTEC (90 Hp) |
| Start of production | 2014 |
| End of production | 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Hatchback |
| Seats | 4 |
| Doors | 3 |
| Fuel consumption (urban) | 5.5 l/100 km (42.8 US mpg, 51.4 UK mpg, 18.2 km/l) |
| Fuel consumption (extra urban) | 3.9 l/100 km (60.3 US mpg, 72.4 UK mpg, 25.6 km/l) |
| Fuel consumption (combined) | 4.5 l/100 km (52.3 US mpg, 62.8 UK mpg, 22.2 km/l) |
| CO2 emissions | 105 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 11.9 sec |
| Acceleration 0 – 62 mph | 11.9 sec |
| Acceleration 0 – 60 mph | 11.3 sec |
| Maximum speed | 180 km/h (111.85 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 12 kg/Hp, 83.3 Hp/tonne |
| Weight-to-torque ratio | 6.4 kg/Nm, 157.3 Nm/tonne |
| Power | 90 Hp @ 4000 rpm |
| Power per litre | 90.1 Hp/l |
| Torque | 170 Nm @ 1800-3700 rpm (125.39 lb.-ft. @ 1800-3700 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | B10XFL |
| Engine displacement | 999 cm3 (60.96 cu. in.) |
| Number of cylinders | 3 |
| Engine configuration | Inline |
| Cylinder Bore | 74 mm (2.91 in.) |
| Piston Stroke | 77.4 mm (3.05 in.) |
| Compression ratio | 10.5:1 |
| Fuel injection system | Direct injection |
| Engine aspiration | Turbocharger, Intercooler |
| Engine oil capacity | 4 l (4.23 US qt | 3.52 UK qt) |
| Coolant | 4.6 l (4.86 US qt | 4.05 UK qt) |
| Kerb Weight | 1081 kg (2383.2 lbs.) |
| Max. weight | 1510 kg (3328.98 lbs.) |
| Max load | 429 kg (945.78 lbs.) |
| Fuel tank capacity | 35 l (9.25 US gal | 7.7 UK gal) |
| Max. roof load | 50 kg (110.23 lbs.) |
| Length | 3698 mm (145.59 in.) |
| Width | 1720 mm (67.72 in.) |
| Width including mirrors | 1966 mm (77.4 in.) |
| Height | 1484 mm (58.43 in.) |
| Wheelbase | 2311 mm (90.98 in.) |
| Front track | 1472 mm (57.95 in.) |
| Rear (Back) track | 1464 mm (57.64 in.) |
| Minimum turning circle | 10.17-11.06 m (33.37 – 36.29 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 |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Tires size | 185/65 R15 |
Powertrain & Engine Architecture
The heart of the Adam Rocks 1.0 ECOTEC was the B10XFL engine, a 999cc turbocharged three-cylinder gasoline engine. This engine was part of Opel’s ‘Small Diesel/Gasoline’ (SDG) family, designed for modularity and efficiency. The B10XFL featured direct fuel injection, a single scroll turbocharger, and an intercooler to enhance performance and reduce turbo lag. The engine’s aluminum block and cylinder head contributed to its relatively lightweight construction. The six-speed manual transmission offered precise gear changes and helped to maximize the engine’s efficiency. This transmission was chosen to keep the cost down and appeal to a wider audience, as opposed to the more expensive automatic options available on higher trim levels.
Driving Characteristics
The 90 hp output of the 1.0 ECOTEC engine, combined with the six-speed manual transmission, provided adequate performance for urban driving and shorter highway trips. Acceleration from 0-60 mph took around 11.3 seconds, and the top speed was 111.85 mph. While not particularly sporty, the engine delivered a usable 170 Nm (125 lb-ft) of torque from 1800-3700 rpm, providing sufficient pulling power for everyday driving situations. The gear ratios were tuned for fuel economy, meaning the engine needed to be revved to access its full potential. Compared to the more powerful 1.4-liter turbocharged engine offered in other Adam Rocks trims, this 1.0-liter version felt less responsive, particularly when fully loaded or tackling steep inclines. However, the lighter engine weight contributed to nimble handling and a relatively comfortable ride.
Equipment & Trim Levels
The Adam Rocks 1.0 ECOTEC (90 hp) typically came with a base level of equipment, focusing on essential features. Standard amenities included air conditioning, power windows, central locking, and a basic audio system with USB connectivity. Safety features such as ABS, ESP (Electronic Stability Program), and multiple airbags were also standard. The interior typically featured cloth upholstery and a functional, if somewhat basic, dashboard layout. Optional extras included alloy wheels, a touchscreen infotainment system with Bluetooth connectivity, heated seats, and parking sensors. The ‘Rocks’ trim added unique exterior styling elements, such as plastic cladding around the wheel arches and sills, and the signature roll-top canvas roof.
Chassis & Braking
The Adam Rocks 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 typically drum brakes, a cost-saving measure for the entry-level trim. The steering was a rack-and-pinion system, offering precise and responsive control. The relatively lightweight construction of the Adam Rocks, at around 1081 kg (2383 lbs), contributed to its agile handling characteristics. Stabilizer bars were fitted to both the front and rear axles to reduce body roll during cornering.
Market Reception & Comparison
The Opel Adam Rocks 1.0 ECOTEC (90 hp) was generally well-received by critics as an affordable and stylish city car. Its fuel economy – around 52.3 US mpg combined – was a major selling point. However, some reviewers noted that the engine lacked outright power, particularly when compared to the more potent engine options available in the Adam Rocks range. Compared to rivals like the Fiat 500 and Volkswagen up!, the Adam Rocks offered a more distinctive and customizable design. The 1.0-liter engine proved to be reliable, although regular servicing was essential to maintain optimal performance.
Legacy
The Opel Adam Rocks, and specifically the 1.0 ECOTEC (90 hp) variant, has established a modest following in the used car market. The engine has proven to be reasonably durable, although potential buyers should be aware of the importance of regular oil changes and maintenance. The relatively simple mechanical design of the 1.0-liter engine makes it relatively affordable to repair. Today, the Adam Rocks remains a popular choice for buyers seeking a stylish, fuel-efficient, and compact city car, particularly those who appreciate its unique design and customizable features. Its blend of practicality and personality continues to appeal to a niche market.
