The Audi A5 Coupe (8T3) 1.8 TFSI, produced from October 2007 to November 2008, represented an entry point into the stylish A5 Coupe range. Positioned as a more accessible alternative to the higher-performance variants like the 3.2 FSI and later the S5, this model aimed to deliver a blend of Audi’s renowned build quality, sophisticated design, and reasonable fuel efficiency. It was a key component of the 8T3 generation, built on the Audi’s versatile B8 platform, shared with the A4. This variant primarily targeted buyers seeking a premium coupe experience without the higher price tag associated with the more powerful engines.
Technical Specifications
| Brand | Audi |
| Model | A5 |
| Generation | A5 Coupe (8T3) |
| Type (Engine) | 1.8 TFSI (170 Hp) |
| Start of production | October, 2007 |
| End of production | November, 2008 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (urban) | 9.9 l/100 km (23.8 US mpg, 28.5 UK mpg, 10.1 km/l) |
| Fuel consumption (extra urban) | 5.5 l/100 km (42.8 US mpg, 51.4 UK mpg, 18.2 km/l) |
| Fuel consumption (combined) | 7.1 l/100 km (33.1 US mpg, 39.8 UK mpg, 14.1 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 8.4 sec |
| Acceleration 0 – 62 mph | 8.4 sec |
| Acceleration 0 – 60 mph | 8 sec |
| Maximum speed | 228 km/h (141.67 mph) |
| Emission standard | Euro 4 |
| Weight-to-power ratio | 8.2 kg/Hp, 121.9 Hp/tonne |
| Weight-to-torque ratio | 5.6 kg/Nm, 179.2 Nm/tonne |
| Power | 170 Hp @ 4800-6200 rpm |
| Power per litre | 94.5 Hp/l |
| Torque | 250 Nm @ 1500-4800 rpm (184.39 lb.-ft. @ 1500-4800 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | CABD |
| Engine displacement | 1798 cm3 (109.72 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 82.5 mm (3.25 in.) |
| Piston Stroke | 84.1 mm (3.31 in.) |
| Compression ratio | 9.6:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 4.6 l (4.86 US qt | 4.05 UK qt) |
| Kerb Weight | 1395 kg (3075.45 lbs.) |
| Max. weight | 1895 kg (4177.76 lbs.) |
| Max load | 500 kg (1102.31 lbs.) |
| Trunk (boot) space – minimum | 455 l (16.07 cu. ft.) |
| Trunk (boot) space – maximum | 829 l (29.28 cu. ft.) |
| Fuel tank capacity | 65 l (17.17 US gal | 14.3 UK gal) |
| Length | 4635 mm (182.48 in.) |
| Width | 1854 mm (72.99 in.) |
| Width including mirrors | 2020 mm (79.53 in.) |
| Height | 1372 mm (54.02 in.) |
| Wheelbase | 2751 mm (108.31 in.) |
| Front track | 1590 mm (62.6 in.) |
| Rear (Back) track | 1577 mm (62.09 in.) |
| Minimum turning circle | 11.4 m (37.4 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 suspension | Independent multi-link suspension |
| Rear suspension | Independent multi-link spring suspension with stabilizer |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 225/50 R17 |
| Wheel rims size | 7.5J x 17 |
Powertrain & Engine Architecture
At the heart of the A5 1.8 TFSI lies the CABD engine code, a 1.8-liter inline-four cylinder powerplant. This engine was a significant step forward for Audi, utilizing direct fuel injection (FSI) and a single turbocharger with an intercooler. The direct injection system allowed for precise fuel delivery, improving both power and efficiency. The turbocharger boosted output, providing a noticeable increase in torque compared to naturally aspirated engines of similar displacement. The engine featured a dual overhead camshaft (DOHC) valvetrain with four valves per cylinder, optimizing airflow for enhanced performance. The 6-speed manual transmission was standard, offering precise gear changes and a more engaging driving experience. The engine’s longitudinal mounting allowed for optimal weight distribution within the front-wheel-drive configuration.
Driving Characteristics
The 1.8 TFSI engine delivered a respectable 170 horsepower and 184 lb-ft of torque. While not as exhilarating as the larger displacement engines, it provided sufficient power for everyday driving and comfortable highway cruising. Acceleration from 0 to 60 mph took around 8 seconds, and the car had a top speed of 141.67 mph. The turbocharger provided a noticeable boost in power during acceleration, but turbo lag was present, particularly at lower engine speeds. The 6-speed manual transmission was well-matched to the engine’s characteristics, offering smooth and precise shifts. Compared to the more powerful 3.2 FSI, the 1.8 TFSI felt less urgent, but it offered a more balanced and fuel-efficient driving experience. The front-wheel-drive configuration provided good traction in most conditions, but could exhibit some torque steer under hard acceleration.
Equipment & Trim Levels
The A5 1.8 TFSI typically came with a generous level of standard equipment. This included features like automatic climate control, a multi-function steering wheel, power windows and mirrors, and an Audi Concert audio system. Upholstery was typically cloth, although leather options were available. Optional extras included features like a sunroof, navigation system, parking sensors, and upgraded alloy wheels. The trim level was generally considered the base model within the A5 Coupe range, but still offered a premium feel and a high level of refinement. The interior design was clean and modern, with a focus on ergonomics and driver comfort.
Chassis & Braking
The A5 Coupe featured a sophisticated chassis design, with independent multi-link suspension at both the front and rear. This suspension setup provided a comfortable ride while maintaining good handling characteristics. The front suspension incorporated ventilated disc brakes, while the rear brakes were solid discs. Anti-lock braking system (ABS) was standard, enhancing safety and control during braking. The car’s weight distribution was well-balanced, contributing to its stable and predictable handling. A stabilizer bar was included in the rear suspension to reduce body roll during cornering.
Market Reception & Comparison
The Audi A5 1.8 TFSI was generally well-received by automotive critics. It was praised for its stylish design, refined interior, and comfortable ride. The engine was considered a good compromise between performance and fuel efficiency. However, some critics noted that the engine lacked the outright power of its larger displacement counterparts. Compared to the 3.2 FSI, the 1.8 TFSI offered better fuel economy and lower running costs, making it a more practical choice for everyday driving. Compared to competitors like the BMW 3 Series Coupe and Mercedes-Benz CLC-Class, the A5 1.8 TFSI offered a compelling combination of style, performance, and value.
Legacy
The 1.8 TFSI engine proved to be a reliable and durable powerplant when properly maintained. While some early examples experienced issues with carbon buildup on the intake valves (a common issue with direct injection engines), these problems could often be addressed with regular maintenance and preventative measures. Today, the A5 1.8 TFSI remains a popular choice in the used car market, offering a stylish and refined coupe experience at an affordable price. Its relatively simple engine design and readily available parts contribute to its ongoing appeal. The combination of Audi’s build quality and the engine’s inherent reliability make it a solid choice for buyers seeking a premium coupe that won’t break the bank.
