Comparison Audi S4 (B9, facelift 2019) 3.0 TDI V6 (347 Hp) quattro MHEV Tiptronic & Mercedes-Benz A-class (W176 facelift 2015) A 180d (109 Hp) BlueEFFICIENCY Edition
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| Brand: | Audi | Mercedes-Benz |
| Model: | S4 | A-class |
| Generation: | S4 (B9, facelift 2019) | A-class (W176 facelift 2015) |
| Engine / modification: | 3.0 TDI V6 (347 Hp) quattro MHEV Tiptronic | A 180d (109 Hp) BlueEFFICIENCY Edition |
| Production start: | 2019 year | 2015 year |
| Coupe type: | Sedan | Hatchback |
| Num. of Doors: | 4 | 5 |
| Num. of seats: | 5 | 5 |
| Fuel consumption / economy - urban: | 7.2 l/100 km | 3.9 l/100 km |
| Fuel consumption / economy - extra urban: | 5.6 l/100 km | 3.2 l/100 km |
| Fuel consumption / economy - combined: | 6.2 l/100 km | 3.5 l/100 km |
| Fuel Type: | Diesel | Diesel |
| Drag coefficient: | 0.26 | |
| Fuel tank volume: | 58 l | 40 l |
| AdBlue tank: | 40 l | |
| Combined fuel consumption (WLTP): | 6.9-7.1 l/100 km | |
| Emission standard: | Euro 6d - TEMP - EVAP - ISC | EURO VI |
| CO2 emissions: | 163 g/km | 89 g/km |
| Power: | 347 hp | 109 hp |
| Max power in: | 3850 rpm. | 4000 rpm. |
| Maximum speed: | 250 km/h | 190 km/h |
| Acceleration from 0 to 100 km/h: | 4.8 sec | 11.3 sec |
| CO2 emissions (WLTP): | 179-186 g/km | |
| Torque: | 700 Nm @ 2500-3100 rpm. | 260 Nm/1750-2500 rpm. |
| Model Engine: | DEWB | |
| Engine position: | Front, longitudinal | Front, transverse |
| Engine displacement: | 2967 cm3 | 1461 cm3 |
| Engine oil capacity: | 6.1 l | |
| Fuel System: | Diesel Commonrail | Diesel Commonrail |
| Aspiration / Turbine: | Turbocharger | Turbo / Intercooler (Turbocharging / Intercooler) |
| Position of cylinders: | V engine | Inline |
| Number of cylinders: | 6 | 4 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 15.5 | |
| Wheel Drive: | All wheel drive (4x4) | Front wheel drive |
| Number of Gears (automatic transmission): | 8 Tiptronic | |
| Number of Gears (manual transmission): | 6 | |
| Length: | 4770 mm | 4299 mm |
| Width: | 1847 mm | 1780 mm |
| Width including mirrors: | 2022 mm | 2022 mm |
| Height: | 1404 mm | 1433 mm |
| Wheelbase: | 2825 mm | 2699 mm |
| Front track: | 1565 mm | 1553 mm |
| Rear (Back) track: | 1546 mm | 1552 mm |
| Ride height(clearance): | 93 mm | |
| Approach angle: | 13.7 ° | |
| Departure angle: | 17.3 ° | |
| Ramp angle: | 9.3 ° | |
| Front overhang: | 906 mm | 913 mm |
| Rear overhang: | 1039 mm | 687 mm |
| Minimum volume of Luggage (trunk): | 420 l | 341 l |
| Maximum amount of Luggage (trunk): | 1157 l | |
| Front suspension: | Multi-link suspension | Independent type McPherson |
| Rear suspension: | Multi-link independent | Multi-link independent |
| Max weight: | 2315 kg | 1850 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Disc | Disc |
| Kerb Weight: | 1785 kg | 1310 kg |
| ABS: | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Electric Steering | Electric Steering |
| Max. roof load: | 90 kg | 100 kg |
| Permitted trailer load with brakes (8%): | 2100 kg | |
| Minimum turning circle (turning diameter): | 11.9 m | 11.00 m |
| Permitted trailer load with brakes (12%): | 1900 kg | |
| Permitted trailer load without brakes: | 750 kg | |
| Permitted towbar download: | 80 kg | |
| Tire size: | 195/65 R15 | |
| Wheel rims size: | R15 |