In this episode we take 2 Tesla powered Land Rover Defenders out on one of the most extreme green lanes in the country - Bastard Lane in Mid Wales. As well as the electric Defenders we've also got two diesel 4x4s joining us. A BMW powered Land Rover Defender 90 and an Isuzu Trooper. Let's see how they compare on various obstacles like rock crawls, water crossings, off-camber and some pretty serious inclines and declines on typical wet slippy Welsh rock.

My Tesla powered green Defender has all stock suspension apart from Terrafirma Monotube shocks and runs on BF Goodrich T/A tyres.

The Spectre Defender has a 2" Terrafirma TF234 lift kit, running on Renegade Radar M/T tyres.

Both electric Defenders have 100kWh battery packs with mid mounted Tesla motors producing 450hp and lots of torque. There's 3 LSDs to put the power to where it needs to be, one in each axle and one centrally in the motor. All the electrics are sealed so water crossings are not a problem.