Mazda Hong Kong will introduce the Mazda6 2.0, Mazda6 2.3 'RUSH', facelift Premacy, and some Mazdaspeed A-spec versions at the Inchcape Auto Expo, in Hall 2 of the Hong Kong Convention and Exhibition Centre this weekend, where the group's Mazda, Toyota, Lexus, Jaguar, Daihatsu and Hino distributors will show more than 120 vehicles. 'At the same time, we've brought a Renesis engine simulator (right) from Japan, which will be displayed for the first time in Hong Kong,' says Mazda Hong Kong spokeswoman Yvonne Kwok. She says Mazda Hong Kong has introduced new after-sales services, including 24-hour roadside assistance, express check-up service and a rotary engine division. The dealership will also launch its progress payment program for the Mazda3. For a Mazda3 Premium, with a loan of $154,000 and a 5 per cent deposit of $8,105, Kwok says the first year, monthly payments will be $2,489; the second year, $2,752; third year, $3,016; fourth year, $3,280; and $3,544 in the fifth. Kwok says the average monthly repayment is $3,016 if it's calculated in normal financial arrangements. Meanwhile, Crown Motors will show the new Toyota Mobility Vehicles (for the elderly and disabled) and the 2005 Daihatsu Sirion compact, plus demonstrate its supreme polymer and express maintenance service. Jaguar Hong Kong will show the new Jaguar XJ Long Wheelbase and the all-wheel-drive Jaguar X-Type 2.5 Sport Estate. Lexus will roll out the LS430 and RX300 'Select' versions, and Hino will show the Green700 series. Porsche says the new 911 Carreras (right) are easier to maintain than their predecessors. 'Porsche's engineers have focused on giving the car a longer service life, reducing the cost to the customer,' the marque says. Inspection intervals on the new 911 Carrera have been raised from 20,000km on the former model, codenamed the 996, to 30,000km on the 997. 'This means the customer spends less time in the workshop, and a reduction in the regular cost of maintenance,' Porsche says. In Germany, the average 911 does 15,000km a year, but mileages are lower here. Porsche Centre Hong Kong general manager Robby Niermann says Hong Kong's 996s do about 5,000 km/year, and the 997s are expected to clock the same. But he says the new Carreras will hold their value for longer. 'The new, extended service intervals underline the engineering quality of Porsche models,' he says. 'They'll support the brand's reputation as much as they will add to the used car value. The service intervals are among the best industry-wide, even more so among sports cars.' Porsche says the 997's alternator, steering servo pump and air-conditioning are driven by one self-adjusting belt that needs to be replaced only every 90,000km, instead of 80,000km. Individual coils make the ignition system maintenance free, and the spark plugs now need to be replaced only every 90,000km, or every four years. Timing chains on the camshaft and the layshaft require no replacement or maintenance and other improvements reduce the cost of repair for minor damage, Porsche says. Niermann says a 996's minor service at 20,000km costs $3,130. A major overhaul, at 40,000km, is $9,780. The 997's bills at these longer intervals should be 'about the same'. He says the 997's workings are similar to those of the 996. 'The mechanics will - once [they're] experienced with the new parts of the 997 - be as quick as with the predecessor,' Niermann says. The most difficult 911s to service in parts, access and time is the 964 model, especially the 964 Turbo, he says. But isn't the dealership worried that Porsche might have devised the automotive equivalent of a perpetual light bulb? 'As long as metal rubs metal [or tyres rub tarmac], you'll still need to replace wear-and-tear-parts in the workshop,' Niermann says. 'And the Porsche Cayenne models, with their much higher annual mileage, generate additional service business.'