These 6 electric cars will pose the biggest threat to Tesla's Model 3

• Tesla has struggled to hit its production goals for the Model 3.
• As Tesla struggles to deliver on its first mass-market electric car, a number of other brands are updating models they have been able to produce reliably or revealing upcoming electric cars that will compete with the Model 3 in the near future.
• They include the 2018 Nissan Leaf, BMW Mini E, and Volkswagen I.D.

After receiving hundreds of thousands of pre-orders for its much-hyped Model 3 electric sedan, Tesla has struggled to build and deliver the car on time. Tesla CEO Elon Musk said the company didn't come close to meeting its 2017 Model 3 production goals, and it doesn't seem like the company will master the production process for the car anytime soon.

As Tesla struggles to deliver on its first mass-market electric car, a number of other brands are updating models they have been able to produce reliably or revealing upcoming electric cars that will compete with the Model 3 in the near future.

Here are six cars Tesla may have to worry about in the coming years.