BMW Repair & Service in San Marcos, Texas

About BMW Service at Riley Auto Care

BMW has earned its "Ultimate Driving Machine" tagline through decades of producing vehicles that set the standard for performance, handling, and driver engagement. From the iconic 3 Series to the powerful M5 and the versatile X5, BMW builds cars and SUVs that reward drivers who appreciate precision engineering. At Riley Auto Care & Transmissions, we have the diagnostic equipment and technical expertise to service BMW's sophisticated systems properly.

BMW's N-series and B-series turbocharged engines are performance-oriented powerplants that require meticulous maintenance. Timing chain issues — particularly on the N20 and N26 four-cylinder engines — can develop without warning if oil changes are delayed. We use BMW-approved 0W-30 or 5W-30 full synthetic oil and follow BMW's condition-based service intervals to keep these engines healthy. The VANOS variable valve timing system also requires clean oil and periodic inspection to maintain proper function.

BMW's ZF 8-speed automatic transmission is one of the finest gearboxes in the industry, but it is often incorrectly labeled as "lifetime fill" — a designation we disagree with. Regular ZF fluid service extends transmission life significantly. We also service BMW's xDrive all-wheel drive system, including transfer case and differential fluid exchanges. Serving BMW drivers throughout the area, we provide the European-caliber expertise your vehicle was built to receive.