Renault 21 Turbo Quadra

Renault 21 Turbo Quadra

The Renault 21 Turbo Quadra is one of the most underappreciated performance sedans of the late 1980s and early 1990s. Combining a turbocharged 2.0-liter engine with all-wheel drive in a comfortable mid-size body, the 21 Turbo Quadra offered performance that could genuinely challenge the German establishment at a fraction of the price. In period, it was faster to 100 km/h than a BMW M3 E30 and could match an E28 M5 in a straight line.

The 21 Turbo Quadra's engine was a 1,995cc single overhead camshaft four-cylinder fitted with a Garrett T3 turbocharger and Bosch L-Jetronic fuel injection. In Phase 2 specification, it produced 175 horsepower and 275 Nm of torque. The turbo lag was noticeable by modern standards but the surge of boost when it arrived was exciting and dramatic, propelling the car forward with genuine urgency.

The Quadra designation indicated all-wheel drive, using a viscous coupling center differential that normally sent most power to the front wheels but could redirect up to 50 percent to the rear when the fronts lost traction. This system provided superb all-weather capability and allowed the car to deploy its considerable torque without the torque steer that plagued the front-wheel-drive Turbo version.

The chassis was well-sorted for a French family sedan. Independent suspension at all four corners provided good body control without sacrificing ride comfort, and the steering was reasonably communicative. The all-wheel-drive system gave the car a planted, confident feel that inspired trust, especially in wet conditions. The brakes were adequate if not exceptional, with ventilated discs at the front.

Visually, the 21 Turbo Quadra was subtly distinguished from standard 21s by deeper bumpers, side skirts, alloy wheels, and discreet Turbo badging. It looked like a respectable family sedan, which was part of its appeal — it could outrun much more expensive cars while maintaining a low profile.

The Phase 2 facelift in 1989 brought improved styling, a revised dashboard, and mechanical refinements. The turbocharged engine received a larger intercooler and revised boost control, improving both power delivery and reliability. The Quadra system also received calibration improvements.

Despite its impressive performance credentials, the 21 Turbo Quadra was never a big seller. The Renault brand did not carry the prestige necessary to compete directly with BMW and Audi in the performance sedan market. Most buyers who could afford a turbocharged all-wheel-drive sedan preferred the badge cachet of German alternatives. This commercial failure makes the 21 Turbo Quadra rare today, and appreciation among knowledgeable enthusiasts is growing.