The legendary 1989 Audi 90 Quattro IMSA GTO unleashes its brutal 2.2L turbo five-cylinder with pure engine sound only. No music — just iconic Group 5-style boost, wastegate chatter and raw IMSA ...

These BMWs are coveted for their strong engines and high-mileage capability. With proper maintenance, these BMWs will see you ...

BMW's first twin-turbocharged engine debuted in this BMW, which recently turned 20 and has serious tuning potential.

The deflection of a control rod leads to stress and abrasion that’s easily missed with standard visual inspections, reducing ...

Discover the hidden gem of Toyota's rally-inspired 1990 Celica All-Trac Turbo, a technological marvel that rivaled Porsche's ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Working capital loans finance a company’s everyday operations and cover short-term expenses ...

Sarah Chandler is a long-time contributing author to several Lonely Planet titles. She is also a speaker and communications consultant. Robert Kelly is managing director of XTS Energy LLC, and has ...