The entry-level petrol variant of the Audi A4 is updated and mature, refined and equipment-oriented to appeal loud and clear, albeit in very reasonable terms. It is expected to be one of the best-selling engine and trim derivatives that remains one of Audi's most important models. UK. As such, the A4 35 TFSI Sport has a petrol engine, which still surprises this tester, but it's probably not worth considering so many customers continue to buy diesel wherever possible. Although lower emissions, more frugal diesel derivatives are just around the corner, the cheapest and most efficient option available at launch (on the 40 TDI Quattro Sport) is almost £6000 more expensive than it will cost you 5% more in company car tax and Not billed as internet more economical even in lab emissions. This helps explain why Audi predicts that this 148bhp petrol A4 will lead the UK sales mix, albeit in a more dynamic and slightly more equipment-laden line with trim than our sport- vehicle test. It will offer C with either a six-speed manual transmission or Audi's seven-speed S tronic dual-clutch automatic and exclusively front-wheel drive, the manual being marginally faster in terms of 0-62 mph performance and the car slightly more frugal and carbon-efficient, the latter depending a bit on equipment level and related wheel size. In any other 148bhp petrol model in the extensive VW group (as well as in other 35 TFSI Audis) you would get a turbocharged 1,5-litre engine, but this A4 uses a detuned 2.0 The liter turbo instead is more likely to deliver more and more torque distribution: 199lb ft of it in all, available from less than 1350rpm. The engine also uses 12-volt mild-hybrid assistance, though, unlike the 48-volt system, that only really makes up for an intelligent alternator and an automatic start-stop engine.