The Audi A4 (B8 8K) 1.8 TFSI Multitronic, produced from May 2007 to 2011, represented a key entry point into the fourth generation of Audi’s popular executive sedan. Positioned within the B8 series – which spanned from 2007 to 2015 – this variant offered a blend of performance and efficiency aimed at buyers seeking a comfortable and technologically advanced vehicle. It served as a more accessible alternative to the higher-performance 2.0 TFSI and 3.2 FSI models, and a more refined option compared to the diesel-powered TDI variants prevalent in Europe. The B8 generation marked a significant evolution for the A4, introducing a new design language and a host of technological advancements, and the 1.8 TFSI Multitronic played a crucial role in its market success.
Technical Specifications
| Brand | Audi |
| Model | A4 |
| Generation | A4 (B8 8K) |
| Type (Engine) | 1.8 TFSI (160 Hp) Multitronic |
| Start of production | May, 2007 |
| End of production | 2011 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 10.3 l/100 km (22.8 US mpg, 27.4 UK mpg, 9.7 km/l) |
| Fuel consumption (extra urban) | 5.7 l/100 km (41.3 US mpg, 49.6 UK mpg, 17.5 km/l) |
| Fuel consumption (combined) | 7.4 l/100 km (31.8 US mpg, 38.2 UK mpg, 13.5 km/l) |
| CO2 emissions | 179 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 8.6 sec |
| Acceleration 0 – 62 mph | 8.6 sec |
| Acceleration 0 – 60 mph | 8.2 sec |
| Maximum speed | 218 km/h (135.46 mph) |
| Emission standard | Euro 4 |
| Weight-to-power ratio | 9.1 kg/Hp, 110.3 Hp/tonne |
| Weight-to-torque ratio | 5.8 kg/Nm, 172.4 Nm/tonne |
| Power | 160 Hp @ 4500-6200 rpm |
| Power per litre | 89 Hp/l |
| Torque | 250 Nm @ 1500-4500 rpm (184.39 lb.-ft. @ 1500-4500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | EA888 / CDHB |
| 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) |
| Coolant | 7 l (7.4 US qt | 6.16 UK qt) |
| Kerb Weight | 1450 kg (3196.7 lbs.) |
| Max. weight | 2000 kg (4409.25 lbs.) |
| Max load | 550 kg (1212.54 lbs.) |
| Trunk (boot) space – minimum | 480 l (16.95 cu. ft.) |
| Trunk (boot) space – maximum | 962 l (33.97 cu. ft.) |
| Fuel tank capacity | 65 l (17.17 US gal | 14.3 UK gal) |
| Max. roof load | 90 kg (198.42 lbs.) |
| Permitted trailer load with brakes (8%) | 1500 kg (3306.93 lbs.) |
| Permitted trailer load with brakes (12%) | 1300 kg (2866.01 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 80 kg (176.37 lbs.) |
| Length | 4703 mm (185.16 in.) |
| Width | 1826 mm (71.89 in.) |
| Height | 1427 mm (56.18 in.) |
| Wheelbase | 2808 mm (110.55 in.) |
| Front track | 1564 mm (61.57 in.) |
| Rear (Back) track | 1551 mm (61.06 in.) |
| Drag coefficient (Cd) | 0.27 |
| Minimum turning circle (turning diameter) | 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 | automatic transmission Multitronic |
| 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 | 225/55 R16; 225/50 R17 |
| Wheel rims size | 7.5J x 16; 7.5J x 17 |
Powertrain & Engine Architecture
The heart of the A4 1.8 TFSI Multitronic is the EA888 engine, specifically the CDHB variant. This 1.8-liter, inline-four cylinder engine utilizes direct fuel injection (FSI) and a single turbocharger with an intercooler to deliver 160 horsepower and 184 lb-ft of torque. The direct injection system allows for precise fuel delivery, improving efficiency and reducing emissions. The turbocharger provides a significant boost in power, particularly at lower engine speeds, enhancing responsiveness. The engine’s valvetrain features a dual overhead camshaft (DOHC) design with four valves per cylinder, optimizing airflow for increased performance. Paired with this engine is Audi’s Multitronic continuously variable transmission (CVT). This transmission, unlike traditional automatics with fixed gear ratios, offers a seamless and stepless gear change, contributing to smoother acceleration and improved fuel economy. The Multitronic utilizes a chain-driven system, known for its durability, but requires specific maintenance intervals with oil changes.
Driving Characteristics
The 1.8 TFSI Multitronic offered a comfortable and refined driving experience. While not as overtly sporty as the 2.0 TFSI, it provided ample power for everyday driving and highway cruising. The Multitronic transmission contributed to smooth acceleration, although some drivers noted a slight disconnect between engine speed and perceived acceleration, a common characteristic of CVTs. The engine delivered its peak torque from 1500 to 4500 rpm, providing good responsiveness in most driving situations. Compared to the six-speed manual transmission available on other A4 variants, the Multitronic prioritized comfort and ease of use over outright performance. The 0-60 mph time of around 8.2 seconds was respectable for the segment, but noticeably slower than the manual or higher-powered versions.
Equipment & Trim Levels
The 1.8 TFSI Multitronic typically came standard with a generous array of features, including automatic climate control, power windows and locks, a multi-function steering wheel, and an Audi Concert audio system. Interior upholstery was typically cloth, with leather options available as an upgrade. Optional extras included a sunroof, navigation system, parking sensors, and upgraded alloy wheels. Trim levels varied slightly depending on the market, but generally offered packages that bundled popular options together. The base trim focused on essential features, while higher trims added luxury and convenience items.
Chassis & Braking
The A4 B8 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 utilized coil springs and stabilizer bar, while the rear suspension also incorporated a stabilizer bar to reduce body roll. Braking duties were handled by ventilated discs at the front and solid discs at the rear, equipped with ABS (Anti-lock Braking System) as standard. The braking system provided adequate stopping power for the vehicle’s weight and performance.
Market Reception & Comparison
The Audi A4 1.8 TFSI Multitronic was generally well-received by automotive critics. It was praised for its comfortable ride, refined interior, and fuel efficiency. However, some reviewers found the Multitronic transmission to be less engaging than a traditional manual gearbox. Compared to the 2.0 TFSI, the 1.8 TFSI offered a more affordable entry point into the A4 range, but with a noticeable reduction in performance. The 1.8 TFSI also offered better fuel economy than the 2.0 TFSI, making it a more attractive option for drivers prioritizing efficiency. Against competitors like the BMW 318i and Mercedes-Benz C180, the A4 1.8 TFSI Multitronic offered a compelling combination of luxury, technology, and value.
Legacy
The EA888 1.8 TFSI engine, in general, proved to be a relatively reliable powerplant, although the Multitronic transmission requires diligent maintenance. Regular oil changes, as specified by Audi, are crucial to prevent premature wear and failure. Today, used examples of the A4 1.8 TFSI Multitronic are readily available and represent a relatively affordable option for buyers seeking a well-built and comfortable executive sedan. While the Multitronic transmission may require more attention than a traditional automatic, its smooth operation and fuel efficiency continue to appeal to many drivers. The B8 A4, including this variant, remains a popular choice in the used car market due to its blend of quality, technology, and relatively reasonable running costs.
