1990 BMW 735i
Introduction
The 1990 BMW 735i is a luxurious sedan powered by a 3.5-liter inline-six engine, producing 208 horsepower and 225 lb-ft of torque. It is paired with a 4-speed automatic transmission. While the 735i is praised for its comfortable ride and refined interior, it has attracted some criticism for its lack of sporty performance and questionable reliability.
Engine
3.5L Inline-Six (M30)
Head Gasket Failure Description/Symptoms: Coolant leaks, overheating, white smoke from exhaust Solution: Replace head gasket Estimated Cost to Fix: $800 - $1200+ Recalls: 01V405000
Intake Manifold Gasket Leak Description/Symptoms: Vacuum leaks, rough idling, loss of power Solution: Replace intake manifold gasket Estimated Cost to Fix: $300 - $500 Recalls: None Found
Transmission
4-Speed Automatic (A4S310)
No Issues Found
Suspension
Front Control Arm Bushings Failure Description/Symptoms: Clunking or rattling noise from front suspension, poor handling Solution: Replace control arm bushings Estimated Cost to Fix: $400 - $600 Recalls: None Found
Rear Shock Absorber Failure Description/Symptoms: Bouncy or unstable ride, excessive body roll Solution: Replace rear shock absorbers Estimated Cost to Fix: $500 - $700 Recalls: None Found
Electrical
Alternator Failure Description/Symptoms: Battery warning light, dimming headlights, electrical malfunctions Solution: Replace alternator Estimated Cost to Fix: $600 - $800 Recalls: None Found
Heated Seat Element Failure Description/Symptoms: Heated seats not working Solution: Replace heated seat element Estimated Cost to Fix: $200 - $300 Recalls: None Found
Exterior
No Issues Found
Interior
Door Lock Actuator Failure Description/Symptoms: Doors not locking or unlocking properly Solution: Replace door lock actuator Estimated Cost to Fix: $200 - $400 Recalls: None Found
Climate Control Panel Failure Description/Symptoms: HVAC controls not working, temperature not regulating Solution: Replace climate control panel Estimated Cost to Fix: $500 - $700 Recalls: None Found
Summary
The 1990 BMW 735i is a luxurious and comfortable sedan but has been plagued by some reliability issues. The most common problems are related to the engine, such as head gasket failures and intake manifold gasket leaks. The suspension and electrical systems have also been known to experience issues. The severity of these problems varies, but some can be costly to fix. Overall, the 735i is not the most reliable vehicle in its class and may require more frequent maintenance and repairs compared to its competitors.