Mars Exploration Rover

Notable parts

• 2 moulds appear in no other set: Mars Rover Solar Panel, Front Panel ×7; Fact Book, Mars Exploration Rover.
• 4 parts come in a colour no other set has for that mould: Technic Axle and Pin Connector Perpendicular Double Split (Light Gray) ×4; Technic Flex Cable 12L (Very Light Gray) ×2; Technic Pin Double with Axle Hole (Light Gray) ×2; Dish 6 x 6 Inverted (Radar) with Hollow Studs (Light Gray).
• 13 parts appear in only a few other sets: Technic Axle and Pin Connector Angled #2 - 180° (Dark Gray) ×12 — also in 8715 BIONICLE Exclusive Accessories; Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes (Dark Gray) ×6 — also in 8596 Takanuva; Technic Beam 1 x 2 Thick (Light Gray) ×4 — also in 8366 Supersonic RC; Technic Brick 1 x 16 [15 Pin Holes] (Tan) ×4 — also in 7476 Iron Predator vs. T-Rex; Technic Beam 1 x 2 Thin (Dark Gray) ×8 — also in 8715 BIONICLE Exclusive Accessories, 8713 Ultimate BIONICLE Accessory Kit; Technic Axle and Pin Connector Angled #4 - 135° (Dark Gray) ×2 — also in 8011 Jango Fett, 9754 Dark Side Developer Kit; Technic Beam 1 x 9 Thick (Light Gray) ×7 — also in 979760, 8366 Supersonic RC, 9788 Mission Mars Challenge Kit; Wheel 49.6 x 28 VR (36.8 x 26) with Axle Hole (Light Gray) ×6 — also in 8473 Nitro Race Team, 8471 Nitro Burner, 8472 Street 'n' Mud Racer; Technic Steering Knuckle Arm with Ball Joint (Light Gray) ×4 — also in 8465 Extreme Off Roader, 8455 Back-Hoe, 4404 Land Busters; Hose Rigid 3mm D. 4L / 3.2cm (White) — also in 8252 Beach Buster, 8007 C-3PO, 7467 International Space Station; Technic Beam 1 x 15 Thick (Light Gray) ×2 — also in 979760, 8366 Supersonic RC, 8473 Nitro Race Team, 9788 Mission Mars Challenge Kit; Technic Beam 3 x 5 L-Shape Thick (Light Gray) ×2 — also in 8376 Hot Flame, 8549 Tarakava, 8455 Back-Hoe, 3545 Puck Feeder; and 1 more.
• 1 mould first came out in 2003, including in this set: Technic Axle 7 ×12.
• 9 existing moulds first came out in their colour in 2003, including in this set: Technic Bush 1/2 Smooth with Axle Hole Reduced (Tan) ×31; Technic Axle and Pin Connector Angled #2 - 180° (Dark Gray) ×12; Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes (Light Gray) ×12; Technic Beam 1 x 2 Thin (Dark Gray) ×8; Technic Beam 1 x 9 Thick (Light Gray) ×7; and 4 more.

Calculated from Rebrickable’s public set inventories, excluding sticker sheets and spare parts.