S5 (B9)

On petrol cars, a carbon intake or high-flow filter is a popular first step for sound and response, often followed by a Stage 1 remap with matching gearbox software. Paddle shifters, a front splitter and wheel spacers are favourite cosmetic upgrades. Heat protection around the hot-vee turbo is worth adding on tuned cars. TDI owners usually concentrate on styling, wheels, suspension and brakes instead.

For many owners, yes. On the 3.0 TFSI, a carbon intake mainly improves induction and turbo sound and adds a high-quality look under the bonnet. Any power gain on an otherwise standard car is modest; the benefit grows on tuned cars, where airflow demand is higher. Make sure the intake is listed for your engine, as TFSI intakes do not fit the TDI.

Many mechanical parts are shared, because both cars use the B9 platform and, on petrol models, the same 3.0 TFSI V6 and eight-speed tiptronic. Intakes, filters, turbo blankets and paddle shifters often fit both. Body parts are different: splitters, side skirts and diffusers are specific to the S5's Coupé, Sportback and Cabriolet bodies. Check each listing's fitment, or save your S5 to My Garage on R44 to filter compatible parts.

It benefits from it, particularly on tuned or hard-driven cars. On the EA839 V6 the turbo sits between the cylinder banks, which improves response but concentrates heat on top of the engine near hoses, wiring and plastic parts. Turbo blankets, heat sleeves and exhaust wrap reduce radiant heat in the engine bay and help protect surrounding components over time.

Review the service history and inspect for known 3.0 TFSI issues: internal water pump leaks, PCV valve faults, oil filter housing leaks, hydraulic engine mount wear and, on early cars, rocker arm bearing problems. Confirm any recall or update work with an Audi dealer by VIN. Fresh oil, coolant and brake fluid are a sensible baseline before adding power or track days.

Yes, but the options differ from the petrol car. The 3.0 TDI can be remapped by specialist tuners, though its 48-volt mild-hybrid system and electric compressor add complexity, and intake and exhaust hardware made for the TFSI will not fit. Styling, wheel spacers, paddle shifters and brake fluids are often shared. Choose a tuner experienced with this engine and declare any modification to your insurer.