Dodge Viper (first generation, SR I) buying guide

Production ran to approximately 6,709 cars, per Car Collector International. Octane Files and Motor1 give the yearly split: 285 in 1992, 1,043 in 1993, 3,083 in 1994 and 1,577 in 1995. All were RT/10 roadsters. The 1996 RT/10 rides on the next generation's chassis, so it is covered in our second-generation guide.

The 1992 car is the collector year, according to Octane Files: all 285 were red over gray, and none had air conditioning. Its top pick is a 1992 with few miles, no modifications and the original top and side curtains. Any other color combination on a 1992 car is a question to answer. Road & Track notes that the first few years were the only ones with side-exit exhausts and the three-spoke wheels.

Later years brought usability. 1993 added black paint. 1994 brought factory air conditioning as a $1,200 option, a gearbox reverse lockout, and emerald green and dandelion yellow paint. For 1995 came a grab handle for the passenger, storage under the seat cushion and a factory removable hardtop in one piece. Early cars used side curtains instead of windows, and ReDriven says improved side windows and removable hardtops came later.

The engine is the reason to be choosy about the early years. Road & Track and PistonHeads both say 1992-1993 cars suffered piston ring problems with high oil consumption, and several engines were replaced under warranty. Car Collector International advises buying the best-documented example in the most desirable specification rather than a tired example of something rarer. You can browse used Viper RT/10s for sale to compare years and condition, or see every Viper listed and its market.

The V10 is rated tough, but a few areas recur in the specialist write-ups.

Piston ring wear

Early cars (1992-1993) suffered ring problems that caused high oil consumption, and several engines were replaced under warranty. Road & Track and PistonHeads both report it, so ask whether an early car has a replacement engine and what paperwork covers it.

Head gasket failure

On hard-run engines the original paper or composite head gaskets degrade, causing leaks, overheating and oil and coolant mixing. The revised gaskets are black multi-layer steel. Octane Files and PistonHeads say the fix runs to four figures once labor is counted.

Gasket and seal leaks

Thermostat gasket leaks affect earlier cars, while rear main seal and timing cover gasket leaks affect later ones, according to Road & Track. Look for oil or coolant weeping before you commit.

Sill heat damage

The exhaust runs through the side sills, which cook. The signs are bubbled paint, discolored sill covers and scorched insulation.

Perished rubber and pump pulley

Coolant hoses, bushings and belts crack with age. The power steering pump pulley is a known failure item, per Road & Track.

Cracked armrest support

A creased center armrest points to a cracked support structure underneath. The fix is pulling the console and reinforcing it with fiberglass, per PistonHeads and ReDriven.

Early fuel and idle faults

Early models had fuel pressure regulator and filter leaks from plastic fittings, and an erratic idle from a partially blocked idle control valve. The T56 gearbox and limited-slip differential rarely give major trouble, say PistonHeads and ReDriven.

PistonHeads and Octane Files put a head gasket job at four figures once labor is counted. Road & Track says a clamshell hood replacement can bring a five-figure bill, and ReDriven puts a plastic windscreen cowl at around $3,000. PistonHeads quotes around £400 for a new clip-in window panel, a UK figure.

The original tires are 275/40-17 front and 335/35-17 rear, which Road & Track and Motor1 describe as scarce, with clubs running group buys. On the plus side, Road & Track and ReDriven say many mechanical parts are shared with other Chrysler products, so routine repairs are easier. Before you buy, check the Viper price guide for the market and then budget separately for tires and gaskets.