As a trusted model among Chinese electric cars and hybrid cars, the 2024 Denza Z9GT DM comes with a standard 6-year or 150,000 km (93,206 miles) vehicle warranty, and the high-voltage battery is covered by an 8-year or 200,000 km (124,274 miles) warranty. Built on BYD's advanced hybrid platform, it inherits proven reliability with low mechanical failure rates, which helps maintain strong used car values over time. Spare parts are widely available, and routine maintenance costs are competitive within its class. A well-maintained vehicle can easily exceed 250,000 km (155,343 miles) of service life, making it a worth buying option for long-term ownership.