Drive and Suspension

Two three-cylinders and one four-cylinder: the engines

The Audi A1 allstreet features three TFSI engines: two three-cylinder engines and one four-cylinder engine. They have a displacement of 1.0 and 1.5, respectively, and their output spectrum ranges from 70 kW (95 metric hp) to 110 kW (150 metric hp). Turbocharging, direct injection and a particle filter are all standard.

Compact and low-friction: the three-cylinder engines

The three-cylinder TFSI engines with their aluminum crankcase have 999 cc of displacement, a compact design and a low weight of just 88 kilograms (194.0 lb). The forged connecting rods and aluminum pistons are so finely balanced that the engine runs quietly and smoothly even without a balancer shaft. Throughout the crank drive the masses and friction loss remain low in magnitude. The intake and exhaust camshafts, which together operate twelve valves, can be adjusted by a crank angle of 50 or 40 degrees as required. The exhaust manifold is integrated in the cylinder head and is an important element of thermal management. Just like the crankcase, the head has its own cooling circuit.

The entry-level engine in the Audi A1 allstreet 25 TFSI and its maximum torque is 175 Nm (129.1 lb-ft) (between 1,600 and 3,500 rpm). This is sufficient for accelerating from zero to 100 km/h (62.1 mph) in 11.5 seconds and achieving a top speed of 182 km/h (116.2 mph). In the more powerful performance level, the three-cylinder engine outputs 81 kW (110 metric hp) and 200 Nm (124.3 lb-ft) of torque, the latter also between 2,000 and 3,000 rpm. The A1 allstreet 30 TFSI, it outputs 81 kW (110 metric hp) accelerates from 0 to 100 km (62.1 mph) in 10.5 seconds and reaches a top speed of 194 km/h (120.5 mph).

Efficient thanks to high-tech: the four-cylinder engines

Thanks to its aluminum crankcase, the 1.5 TFSI is also very light. The four-cylinder engine, which draws from a displacement of 1,498 cc, combines state-of-the-art efficiency technologies, including the cylinder on demand (COD) system. It shuts off the second and third cylinders at low and medium loads and engine speeds, helping to reduce fuel consumption by up to 20 percent in moderate driving operation. The cylinder linings have an iron coating that is applied via plasma spraying and reduces friction significantly. The map-controlled cooling module enables particularly effective thermal management, which is assisted by the exhaust manifold located in the cylinder head. The common rail system operates with up to 350 bar; the high injection pressure results in low particle emissions.

The 1.5-liter engine in the the AudiA1 allstreet 35 TFSI with an output of 110 kW (150 metric hp) has an output of 110 kW (150 metric hp) and transfers 250 Nm (184.4 lb-ft) of torque to the crankshaft in the range from 1,500 to 3,500 rpm. The standard sprint takes 8.3 seconds and the top speed is 215 km/h (133.6 mph).

* Figures depend on the tires/wheels used

Tailor-made partner for the engine: the transmission

The power of the engines is transferred to the front wheels. In the A1 allstreet 25 TFSI, a five-speed manual transmission performs the transmission, in the allstreet 30 TFSI, it is a six-speed gear box or, optionally, the seven-speed S tronic.

In cooperation with the Audi drive select dynamic handling system, the dual-clutch transmission provides a freewheeling function in “efficiency” mode that further reduces consumption. As an option, the driver can use paddles on the steering wheel to change gears. The compact seven-speed S tronic that switches at lightning speed works with dry-running clutches—the omission of oil supply increases their efficiency.

Harmonious and sporty: the suspension

The suspension of the most progressive Audi A1 features harmonious tuning: This ensures sporty and secure handling, confident and smooth straight ahead running, and excellent comfort. A MacPherson structure with bottom wishbones serves as the front suspension, while a compact, light-weight torsion-beam axle is used at the rear. The electromechanical power steering is sensitive and precise, and its assistance depends on the current driving speed. When driving at high speeds through corners or on smooth surfaces, the Electronic Stabilization Control (ESC) ensures precision and safety. The hold assist (standard with the S tronic) prevents the car from rolling unintentionally on uphill and downhill slopes for three seconds.

Even more fun to drive: the dynamic package

All engine variants of the Audi A1 allstreet have the same suspension setup, which raises the body trim level considerably as compared to the A1 Sportback, thereby allowing the vehicle to be driven on unsurfaced roads. At the customer’s request, the 30 TFSI and the 35 TFSI are equipped with the dynamic package. It includes red brake calipers, the Audi drive select dynamic handling system, adjustable dampers and a sound actuator.

The Audi drive select dynamic handling system gives the driving experience an even greater range. It offers the modes auto, dynamic, efficiency and individual (only in combination with navigation). In the base configuration, it affects the power steering and the engine characteristics. Optional elements such as the S tronic, adaptive cruise control, the engine sound and damper control are also included in the dynamic handling system.

Sporty and chic: wheels and brakes

TheA1 allstreet 25 TFSI and 30 TFSI roll off the line with 16-inch light alloy wheels as standard, while the 35 TFSI is already fitted with 17-inch wheels as standard. Audi and Audi Sport offer 17-inch and 18-inch wheels up to a tire size of 215/45, the latter in combination with the dynamic package. The internally ventilated brake discs on the front axle measure 276 millimeters (10.9 in) in diameter; the rear discs 230 millimeters (9.1 in).

All terms marked in the text are explained in detail in the technology lexicon at www.audi-mediacenter.com/en/technology-lexicon.

The equipment, data and prices specified in this document refer to the model range offered in Germany. Subject to change without notice; errors and omissions excepted.