Yes, above 10% is already high and requires serious calculation. It could be worth it if the expenses are deductible as business expenses.
On the other hand, 2.5% is almost zero risk, but it also means more money flows out, which weakens the currency. Because of that, imported cars that rely on overseas parts become much more expensive. The parts are not cheap when the currency is weak.
I could have financed a more expensive model, but I had to consider the long term maintenance and clutch costs. Those would be 2-3 times higher than what people normally pay. So Huracan was the better choice.
For Japanese cars, they offer some of the best value you can find, which is one of the main reasons they sell so well. Super quality and dirt cheap. Just absolutely boring.