When it comes to the hybrid system in the Audi S6, it has the potential to significantly impact fuel economy. The ability to switch to electric power at low speeds can make a big difference in efficiency, especially when a powerful petrol engine becomes inefficient in such conditions. Running on electricity in these situations can provide a win-win situation for drivers.
During our testing, we found that the Audi S5 could achieve an impressive 40mpg when driven conservatively. The regenerative braking is smooth and gradual, and the electric motor emits a distinct whine while in operation.
While the hybrid technology plays a crucial role in improving efficiency, it seamlessly blends into the background during normal driving, allowing the powerful engine to take center stage. The engine delivers good throttle response and a pleasing sound, with a hint of grit that sets it apart from competitors like Mercedes and BMW.
Performance-wise, the Audi S6 offers plenty of power, with responsive paddle shifters that enhance the driving experience. Although the gearbox performs well overall, there are minor issues with soft shifts during aggressive driving, automatic upshifts at the redline, and occasional clunkiness in city driving.
Even the diesel variant of the Audi S5 benefits from the hybrid system, although the fuel savings may not be groundbreaking. The combination of a diesel engine and hybrid technology results in impressive fuel efficiency figures, with the diesel version matching the petrol model in terms of economy. In real-world testing, the diesel model returned high-40s mpg on a mixed driving route and showed potential for low-50s mpg on the highway.
While Audi acknowledges that diesel sales in the UK are declining, the company continues to offer diesel options due to their popularity in other markets like Germany. The superior performance and efficiency of the diesel engine make it a compelling choice for buyers, even in a market dominated by petrol-powered vehicles.
Overall, the Audi A5 lineup offers a range of engine options, with the 201bhp diesel engine standing out for its balance of power and efficiency. The entry-level petrol model, while competent, lacks the reserve power and refinement of the higher-spec versions. Audi’s decision not to include the hybrid system in the base petrol model helps to keep costs down, making the diesel variant a more attractive option for buyers.
