Please note that the non-Hybrid Mariner with the I-4 2.3L has a tow rating of only 1500lbs. If you're looking to tow more than 1500lbs with an SUV and stay on the manufacturers good side, you're gonna need a bigger engine than the I-4s. The Escape, Mariner, Tribute, Vue, CR-V and RAV4 are all offered with similar I-4 engine sizes and all have the same 1500lb tow rating. Given the MMH/FEH carries an extra 200lb battery pack on the back suspension and doesn't have an actual reverse gear, 1000lbs is a pretty good number.