This depends on the car size. You'll find somewhere around 150lb-ft of torque is enough in smaller cars, while mid-size cars need at least around 180lb-ft of torque to feel fast. Meanwhile, large trucks and SUVs need at least around 250lb-ft of torque. But ideally, they should have at least 350lb-ft of torque if you want to tow and/or go offroading.