Tesla Model X I (2015 – 2021)

Reliability score : 6.5/10

Presentation of the Tesla Model X (Generation I) ⚠️ IMPORTANT CLARIFICATION REGARDING THE DIESEL ENGINE: As an automotive expert, it is my duty to correct a fundamental error in the request: the Tesla Model X has NEVER been produced with a diesel engine, nor any other internal combustion engine. Tesla is a manufacturer exclusively dedicated to 100% electric vehicles (BEV). This sheet will therefore focus on the comprehensive range of electric powertrains that have equipped this model. The Tesla Model X is a large luxury electric SUV (F-Segment), famous for its articulated rear doors known as "Falcon Wing" doors and its giant panoramic windshield. Based on the Model S platform, it redefined the standards of performance and roominess (up to 7 seats) for family SUVs. However, this first gener

✅ Strengths

Integrated and unbeatable Tesla Supercharger network
Gigantic interior space and unique panoramic windshield
Over-the-air (OTA) software updates that keep the car from aging as quickly
Mind-boggling performance for a vehicle of this weight (2.5t)
Highly durable 100 kWh battery packs over time

⚠️ Weaknesses

Total absence of a diesel engine (for high-mileage drivers resistant to electric vehicles)
Disastrous reliability of the Falcon doors (sensors, motors, seals) on 2015-2017 models
Chronic and costly wear of the front half-shafts
Build and finish quality unworthy of the selling price (rattles, panel gaps)
Very rapid asymmetrical wear of the rear tires (inner edge) due to non-adjustable camber
Prohibitive out-of-warranty repair costs

🎯 Verdict

Expert verdict The first-generation Tesla Model X is a fascinating vehicle, a true family spaceship, but it is also the least reliable model in Tesla's history. You must absolutely forget the idea of finding a diesel (or internal combustion) engine in it. As an electric vehicle, its powertrain (battery/motors) is generally very robust, particularly on the 100D versions. However, everything around it (Falcon doors, suspension, half-shafts, MCU1 electronics, panel alignments) is prone to frequent and extremely costly breakdowns out of warranty. Buying advice: Avoid at all costs the 2015-2017 models (especially the 90D) which accumulate teething problems. If you want a Model X, target a late 2018 100D model, or ideally a "Raven" (Long Range) version from mid-2019 onwards, which benefits from a more reliable suspension and better efficiency. Demand a crystal-clear maintenance history (replacement of half-shafts and MCU2 upgrade).