To say that the Nissan GT-R and Nissan 370Z are overdue replacements is an understatement. Both cars launched way back in 2007, which makes them 13 years old in 2020. In the fast-moving auto industry, most cars would be considered obsolete at that age. Next-generation versions are still coming – eventually.

Nissan has remained tight-lipped about the all-new GT-R and 370Z and it's safe to say some enthusiasts are getting impatient. But despite this, the GT-R and 370Z are still selling, albeit in lower numbers compared to previous years.

According to sales figures released by Nissan, 158 examples of the 370Z were sold in December 2019 compared to 202 in December 2018, representing a 21.8 percent drop. As for yearly sales, Nissan sold 2,384 370Zs in 2019 and 3,468 in 2018, which is a 31.3 percent drop.

Unsurprisingly, the more expensive GT-R fared worse, with 17 units sold in December 2019 compared to 25 in the same month in 2018, representing a 32 percent decline. In total, 331 Nissan GT-Rs were sold in 2019 compared to 538 in 2018, which is a decline of 38.5 percent.

Clearly, Nissan needs to update the GT-R and 370Z sooner, rather than later if it wants to improve sales of its high-performance models. Recent spy shots showed a Nissan 370Z test mule being put through its paces possibly with a new powertrain, so development of the next-generation model appears to already be underway. Hopefully, we won't have to wait much longer for new details on the next-generation Nissan GT-R and 370Z. Still, the fact that Nissan is still able to ship models that are 13 years old is arguably an impressive achievement.

It's a different story for Nissan's crossover sales, however. Last year, Nissan sold 58,193 units of the Kicks crossover, which was a 150 percent increase over the previous year.