2007-2008 Audi A5 Coupe (8T3) 1.8 TFSI (170 Hp) Multitronic

The Audi A5 Coupe (8T3) 1.8 TFSI Multitronic, produced from October 2007 to November 2008, represented an entry point into the A5 Coupe range, offering a blend of style, efficiency, and technology. Positioned below the more powerful 2.0 TFSI and 3.2 FSI models, this variant aimed to attract buyers seeking a sophisticated coupe experience without the higher price tag or running costs. It was a key component of Audi’s strategy to broaden the appeal of the A5, leveraging the popular 1.8 TFSI engine and the convenience of the Multitronic continuously variable transmission (CVT). The A5 Coupe itself was the two-door coupe derivative of the B8 Audi A4 platform, sharing its underpinnings with the A4 sedan and Avant (wagon).

Technical Specifications

Brand Audi
Model A5
Generation A5 Coupe (8T3)
Type (Engine) 1.8 TFSI (170 Hp) Multitronic
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) 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 174 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 8.4 kg/Hp, 118.5 Hp/tonne
Weight-to-torque ratio 5.7 kg/Nm, 174.2 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 1435 kg (3163.63 lbs.)
Max. weight 1935 kg (4265.94 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.)
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 225/50 R17
Wheel rims size 7.5J x 17

INTRODUCTION

The Audi A5 Coupe (8T3) 1.8 TFSI Multitronic, launched in 2007, was a significant addition to Audi’s lineup. It offered a compelling combination of Audi’s renowned build quality, sophisticated design, and a relatively fuel-efficient turbocharged engine. This variant was specifically targeted at buyers who desired the aesthetic appeal of the A5 Coupe but didn’t require the higher performance of the more expensive models. The Multitronic transmission, a continuously variable transmission, was a key feature, providing smooth and efficient power delivery. It slotted into the A5 range as the entry-level engine option, offering a more accessible price point than the 2.0 TFSI and 3.2 FSI variants.

Powertrain & Engine Architecture

At the heart of the A5 1.8 TFSI Multitronic lies the CABD engine code, a 1.8-liter inline-four cylinder engine. This engine utilizes direct fuel injection (FSI) and a single turbocharger with an intercooler to deliver a balance of power and efficiency. The direct injection system precisely meters fuel into the combustion chamber, improving combustion efficiency and reducing emissions. The turbocharger boosts power output by forcing more air into the engine. The engine produces 170 horsepower at 4800-6200 rpm and 250 Nm (184 lb-ft) of torque between 1500-4800 rpm. The Multitronic transmission is a key component of this powertrain. It’s a continuously variable transmission (CVT) that uses a chain drive instead of a traditional belt, offering improved durability and torque handling. The Multitronic features seven pre-selectable gear ratios, allowing for both efficient cruising and responsive acceleration.

Driving Characteristics

The 1.8 TFSI Multitronic offered a comfortable and refined driving experience. While not as overtly sporty as the higher-powered A5 variants, it provided adequate performance for everyday driving. Acceleration from 0-60 mph took approximately 8.2 seconds, and the top speed was electronically limited to 135 mph. The Multitronic transmission contributed to smooth gear changes and a lack of noticeable shift shock. However, some drivers found the transmission could feel slightly disconnected compared to a traditional automatic or manual gearbox. The engine’s torque delivery was relatively linear, providing good responsiveness in most driving situations. Compared to the 2.0 TFSI, the 1.8 TFSI felt less urgent in its acceleration, but it offered better fuel economy. The manual transmission versions of the 1.8 TFSI provided a more engaging driving experience, but the Multitronic prioritized comfort and convenience.

Equipment & Trim Levels

The A5 1.8 TFSI Multitronic typically came equipped with a respectable level of standard features. These included alloy wheels, automatic climate control, a multi-function steering wheel, and an Audi Concert audio system. Interior upholstery was typically cloth, although leather options were available. Optional extras included features like a sunroof, navigation system, parking sensors, and upgraded audio systems. Trim levels varied slightly depending on the market, but generally, the 1.8 TFSI Multitronic was positioned as a mid-range offering, bridging the gap between the base models and the more luxurious trims. The dashboard layout was typical of Audi at the time, with a clean and functional design.

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 and good handling characteristics. The front suspension utilized coil springs and shock absorbers, 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. Anti-lock braking system (ABS) was standard, providing enhanced braking performance and stability. The A5’s chassis was designed to provide a balance between comfort and handling, making it a pleasant car to drive on a variety of road surfaces.

Market Reception & Comparison

The Audi A5 Coupe 1.8 TFSI Multitronic was generally well-received by automotive critics. It was praised for its stylish design, comfortable ride, and fuel efficiency. However, some reviewers noted that the engine lacked the outright performance of the 2.0 TFSI. Compared to the 2.0 TFSI, the 1.8 TFSI offered better fuel economy, with combined fuel consumption figures of around 31.8 US mpg. The 1.8 TFSI was also generally more affordable to insure and maintain. Against competitors like the BMW 3 Series Coupe and Mercedes-Benz CLC, the A5 1.8 TFSI offered a compelling combination of style, quality, and value.

Legacy

The 1.8 TFSI engine, in various iterations, proved to be a reliable and durable powerplant. The Multitronic transmission, however, has a more mixed reputation. While offering smooth operation, it can be prone to issues if not properly maintained, particularly regarding fluid changes. Today, the A5 1.8 TFSI Multitronic can be found on the used car market at relatively affordable prices. It remains a stylish and comfortable coupe, offering a good value proposition for buyers seeking a premium driving experience without breaking the bank. Regular maintenance, particularly of the Multitronic transmission, is crucial to ensure long-term reliability.

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