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Since you are looking at a 2021 model, here are a few specific things to keep in mind for this particular year:
Why the 2021 is a Great Choice
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The Engine: The 2021 M40i features the B58 engine paired with a 48V mild-hybrid system. This setup provides smooth auto start-stop transitions and an extra boost of torque for better efficiency and punchy acceleration.
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Tech Standards: By 2021, Android Auto and Apple CarPlay were standard and wireless, which is a major convenience over older models.
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iDrive 7: This model year uses one of BMW's most stable and user-friendly infotainment systems, featuring a mix of physical buttons and a responsive touchscreen.
Things to Verify Before Buying
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Service History: Since the listing mentions it is "well-cared for," ask for the BMW service records. This engine is very reliable, but regular oil changes are critical for the turbocharger's longevity.
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Tire Condition: The M40i often comes with staggered performance tires. These cannot be rotated front-to-back and tend to wear faster than standard tires; check the tread depth to ensure you won't need an immediate $1,200+ replacement.
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Brakes: The M Sport brakes on this trim provide excellent stopping power but can be expensive to replace. Check if the pads and rotors have plenty of life left.
Comparison Tip
If you are comparing this to other SUVs, the X3 M40i generally holds its value better than the base 30i model because of its desirability among enthusiasts.
Would you like me to help you find the current market value for a 2021 X3 M40i in your area to see if the price is fair?





