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The Rolls-Royce Phantom leads this month's list of discounts

Every month, we take a look at vehicle sales data in America to pick out the vehicles with the largest monetary discount. Usually, the list is dominated by high-performance two-door luxury sports cars. This month is different. Much to our surprise, the 2020 Rolls-Royce Phantom stands above all others with an average discount of $18,588 off the price quoted on its window sticker. Now, it bears mentioning that an $18,000-plus discount still only represents 3.46% of its $537,500 average retail price, and that the resulting $518,912 cost to drive off the showroom floor still makes the Phantom an extremely expensive range-topping luxury sedan. Still, even very wealthy people won't snicker at that kind of savings. Up next is another unlikely newcomer to the biggest-discount chart: the 2020 Porsche Taycan. The electric super sedan's average sticker price of $152,250 is cut to $135,707 after a discount of $16,453 is lopped off. That represents a savings of nearly 11%. We can't say how many of the Taycan's buyers over the last month will be able to claim tax rebates due to the Taycan's status as an electric vehicle, but that could potentially represent a further cut off the car's sticker. Rounding out the top three is the 2020 Maserati Quattroporte. Buyers of this Italian luxury sedan are saving an average of $13,839 for an average transaction price of $87,646. We normally only share the top three, but this month's list is interesting enough that we'll share some more. In fourth and fifth place are the 2020 Mercedes-Benz S-Class (with an average $13,239 discount) and the 2021 BMW 7 Series (with an average $12,435 discount) followed by the 2020 Rolls-Royce Wraith — interestingly enough also with a savings of 3.46% — and the 2020 Maserati Levante and Ghibli. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

Porsche planning Cayman GT4, 700-hp Turbo S e-Hybrids

The old wisdom when it came to the Porsche lineup was that the Boxster and Cayman needed to be kept in line so as not to encroach on even the lower end of the 911 range. But with the latest versions of the compact roadster and coupe, that logic has gone out the window. Especially with the introduction of the latest GTS models (pictured above). But that's not the end of the story. According to Motor Trend, Porsche is working on an even more powerful version of the Cayman that could carry the GT4 badge, positioning itself along the same lines as the 911 GT3 and GT2 – only, you know, smaller. Although our sources at Porsche would, predictably, neither confirm nor deny the report, MT has it that power could come from either a turbo-four or a more powerful flat-six, mated to the beefed-up DCT from the latest 911 GT3. A similar version of the Boxster could bring back the RS Spyder designation. That's not all Porsche is said to have in store, though. Based on the engineering that went into the 918 Spyder, Porsche could roll out a new range-topping model for the 911, Panamera and maybe even the Cayenne, packing a version of the 918's PHEV powertrain. Slotting in above the existing Turbo S variants of each model line, the new flagship models could pack 700 horsepower or more and be designated e-Hybrid in similar fashion as the 918.

VW adding particulate filters to gas engines

Volkswagen is working hard to overcome the PR disaster that is its diesel emissions scandal, and part of its efforts is focusing, weirdly, on petrol engines. Starting in June 2017, the embattled German automaker will add particulate filters to the gas-powered Volkswagen Tiguan and Audi A5. The change will eventually impact nearly every direct-injected gas engine the VW Group makes. Audi? Particulate filter. Seat? Particulate filter. Even Bentley is going to get the tech, all in a bid to reduce soot emissions by 90 percent. In fact, by 2022 VAG expects 7 million of its vehicles to boast the emissions-cleaning tech, which has long been a fixture on diesel engines. "Following increases in efficiency and lower CO2 output, we are now bringing about a sustained reduction in the emission levels of our modern petrol engines by fitting particulate filters as standard," Volkswagen Group research and design boss Dr. Ulrich Eichhorn said in a statement. "In the future, all models will be equipped with the latest and most efficient SCR catalytic converter technology." VW's initial rollout focuses on the 1.4-liter, turbocharged Tiguan and the 2.0-liter, turbocharged A5. Considering the popularity of the 2.0-liter across the VW range, we'd expect it's only a matter of time before VW expands its particulate filters tech to additional gas-powered vehicles. Related Video: