Vehicle Guide

1998 BMW 7 Series Problems, Reliability & Owner's Guide

Common problems with the 1998 BMW 7 Series, reliability ratings, maintenance tips, and owner reviews. Get your complete owner's guide.

Overview

The 1998 BMW 7 Series is a full-size luxury sedan from the E38 generation, known for blending classic BMW driving feel with flagship-level comfort. It’s ideal for buyers who want an understated executive car with strong highway manners, a premium cabin, and available V8 or V12 power. In the late-1990s luxury market, it competed directly with the Mercedes-Benz S-Class and Lexus LS, offering a more driver-focused personality. For many enthusiasts, the 1998 model sits in the sweet spot of E38 styling and technology without the complexity of later ultra-electronic luxury cars.

Key Features

1) E38 CHASSIS AND RIDE QUALITY: A well-balanced rear-wheel-drive platform with confident high-speed stability and a composed, quiet ride that still feels connected for a large sedan. 2) ENGINE OPTIONS: Common U.S. models include the 740i/740iL with a 4.4L M62 V8, and the 750iL with a 5.4L M73 V12. These engines deliver smooth power, with the V12 focusing on effortless acceleration and refinement. 3) LONG-WHEELBASE OPTION (iL): The 740iL and 750iL add rear-seat legroom, making them popular choices for chauffeured use or frequent back-seat passengers. 4) PREMIUM INTERIOR AND COMFORT FEATURES: High-quality materials, supportive seating, dual-zone climate control, and available luxury options that were top-tier for the era. 5) SAFETY AND GRAND TOURING CHARACTER: Strong highway cruising capability, confident braking feel, and a solid, “bank-vault” body structure that made the E38 a benchmark executive sedan.

Common Issues & Reliability

Shoppers often search “1998 BMW 7 Series problems” and “1998 BMW 7 Series reliability” because the E38 can be dependable when maintained, but neglected examples become expensive quickly. Here are several 1998 BMW 7 Series common issues owners report: 1) COOLING SYSTEM FAILURES (COMMON AROUND 80,000–130,000 MILES): Radiator end tanks, expansion tanks, plastic cooling fittings, water pumps, and thermostats can fail with age. Overheating is the big risk—on any E38, repeated overheating can lead to severe engine damage. 2) TIMING CHAIN GUIDE WEAR ON M62 V8 (OFTEN 120,000–200,000+ MILES): On 740i/740iL models, timing chain guide wear can cause rattling at startup or persistent chain noise. If ignored, it can lead to major engine repairs. 3) SUSPENSION AND STEERING WEAR (90,000–150,000 MILES): Thrust arm bushings, control arms, ball joints, and tie rods wear, causing front-end shimmy under braking, vague steering, or uneven tire wear. The car’s weight and wheel/tire setup accelerate bushing wear compared to smaller BMWs. 4) ELECTRICAL/CONVENIENCE ITEMS AND CLIMATE CONTROL AGING: Pixel failures in the instrument cluster or display screens, window regulator issues, and HVAC blower resistor (final stage unit) problems are common as these cars age. These aren’t always catastrophic, but they can be frustrating and add up.

Frequently Asked Questions

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