How many pieces are in the MT-31 Trike?

MT-31 Trike contains 95 pieces.

What age is the MT-31 Trike recommended for?

This set is recommended for ages 18+.

When was the MT-31 Trike released?

MT-31 Trike was released in 2007.

🏛 Mars Mission

Set #7694

MT-31 Trike

Name: MT-31 Trike
Brand: LEGO
SKU: 7694-1

The MT-31 Trike is a fun little set from the Mars Mission theme.

🏆 Best For: Younger LEGO enthusiasts and fans of the Mars Mission theme looking for a quick and fun build. ⏱ 1.5 hr build 🧩 95 pcs

★★★☆☆ 3.8

Fans appreciate this set's unique trike design and the inclusion of both a Martian and astronaut minifigure. However, some find the build relatively simple and the overall play value limited compared to larger sets in the Mars Mission theme.

Check price on Amazon

📝 Our Take

The MT-31 Trike is a fun little set from the Mars Mission theme. It perfectly captures the adventurous spirit of space exploration with its rugged design and bright color scheme, making it a great addition to any LEGO collection.

This set is perfect for younger builders and fans of the Mars Mission theme. With a relatively low piece count, it offers a quick and engaging building experience that can be easily completed in a single sitting, and it's great for imaginative play.

Skip this if you're looking for a more complex and challenging build. This set is geared towards a younger audience, so if you prefer larger, more intricate models, consider exploring other sets within the LEGO Space theme.

✨ New

Ask BlockTalk about this set

AI assistant with full set data

BlockTalk

Hi! I'm BlockTalk, your LEGO expert. Ask me anything about the MT-31 Trike - building tips, investment potential, comparisons, or anything else!

Try asking:

How does this set compare to other vehicles in the Mars Mission theme? What are some good ways to display this set with other LEGO Space sets? Is this set a good introduction to LEGO Technic elements for younger builders? How has the value of this set changed since it was retired?

🧱 Building Experience

🧩

Pieces

⏱

1.5h

Build Time

📊

Beginner

Difficulty

Build Highlights:

Simple but effective Technic integration for the steering mechanism.
Use of angled connectors to create a unique trike design.
Incorporation of translucent dark blue cones for a futuristic look.
Durable construction suitable for play.

📈 Investment Analysis

→ Price stable

C+

Investment Grade

⏳ Active

The MT-31 Trike, while not the most sought-after set, holds some investment potential due to its retired status and the popularity of the Mars Mission theme among LEGO Space collectors. Its relatively low piece count might limit significant appreciation, but the inclusion of minifigures and the set's overall uniqueness could make it a worthwhile addition to a collection. However, potential investors should be aware of the limited appeal compared to larger or more iconic sets from the same era, and consider the risk that broader interest in this specific subtheme may wane.

Not Financial Advice: Content is for educational purposes only. Past performance doesn't guarantee future results. Full disclaimer

⚖ Compare Similar Sets

MX-71 Recon Dropship

Mars Mission • 204 pcs

$20.00

MT-61 Crystal Reaper

Mars Mission • 380 pcs

$40.00

Gridnoid

Ice Planet 2002 • 50 pcs

$6.00

Compared to other Mars Mission sets, the MT-31 Trike is a smaller, more accessible build. While sets like the larger Martian base offer more play features and a higher piece count, the Trike is a good entry point into the theme, especially for younger builders. It's also a more affordable option for collectors looking to acquire a piece of the Mars Mission lineup without a significant investment.

2 Minifigures Included

Mars Astronaut, Balaclava

5 parts

Martian

2 parts

The set includes a Martian minifigure and a Mars Astronaut with a Balaclava, adding to the playability and collectibility. The Mars Astronaut is unique to this subtheme.

📦 Full Parts Inventory - 48 unique parts • 85 total pieces

Equipment Goblet ...

Part #: 2343 2× Black

Tile Special 1 x ...

Part #: 2412b 2× Orange

Wedge Plate 3 x 6...

Part #: 2419 1× White

Headwear Accessor...

Part #: 2447 1× Metallic Gold

Brick 2 x 6

Part #: 2456 1× White

Wheel Hard Plasti...

Part #: 2515 3× Orange

Technic Disc 3 x 3

Part #: 2723 1× Black

Technic Pin with ...

Part #: 2780 4× Black

Lever Small Base ...

Part #: 298c02 1× Blue

Brick 2 x 4

Part #: 3001 1× Light Bluish Gray

Rock 1 x 1 Jewel ...

Part #: 30153 1× Trans-Neon Green

Plate 2 x 3

Part #: 3021 1× Light Bluish Gray

Plate 1 x 2

Part #: 3023 2× Orange

Plate 4 x 6

Part #: 3032 1× Black

Tile 1 x 2 with G...

Part #: 3069b 2× White

Technic Axle and ...

Part #: 32014 4× Black

Technic Axle and ...

Part #: 32015 4× White

Technic Bush 1/2 ...

Part #: 32123b 5× Light Bluish Gray

Technic Pin witho...

Part #: 3673 1× Light Bluish Gray

Technic Brick 1 x...

Part #: 3701 2× White

Technic Brick 1 x...

Part #: 3702 2× Black

Technic Axle 4

Part #: 3705 2× Black

Technic Axle 6

Part #: 3706 3× Black

Technic Axle 8

Part #: 3707 2× Black

Technic Axle 12

Part #: 3708 2× Black

Technic Bush

Part #: 3713 2× Light Bluish Gray

Technic Steering ...

Part #: 3736 2× White

Plate Special 1 x...

Part #: 3794a 2× Dark Bluish Gray

Plate 2 x 6

Part #: 3795 1× White

Brick Special 1 x...

Part #: 4070 2× Black

Hinge Brick 2 x 2...

Part #: 40902 1× Black

Wedge Curved 6 x ...

Part #: 41747 1× White

Wedge Curved 6 x ...

Part #: 41748 1× White

Technic Pin 1/2

Part #: 4274 1× Blue

Technic Axle Pin ...

Part #: 43093 2× Blue

Hinge Plate 1 x 2...

Part #: 44567a 1× Light Bluish Gray

Hinge Plate 1 x 4...

Part #: 44568 1× White

Technic Axle Conn...

Part #: 45590 1× Black

Cone 1 x 1 [No To...

Part #: 4589 4× Trans-Dark Blue

Windscreen 6 x 6 ...

Part #: 50747 1× Trans-Orange

Slope 30° 1 x 1 x...

Part #: 54200 2× Orange

Equipment Martian...

Part #: 58843 1× White

Cylinder 9 x 4 x ...

Part #: 58947 1× Trans-Orange

Plate Special 1 x...

Part #: 6019 2× Black

Technic Axle 1.5 ...

Part #: 6553 1× Light Bluish Gray

Tile 1 x 6 with G...

Part #: 6636 1× Black

Hose, Ribbed 7mm ...

Part #: 78c04 2× Black

🧱 Sticker Sheet for...

Part #: 59620 1× [No Color/Any Color]

The set features a variety of Technic elements, making it a good source for builders looking to expand their collection of connectors, axles, and gears. The orange color scheme is also relatively uncommon, providing useful parts for creating custom vehicles or space-themed MOCs.

🛒 Where to Buy

💎 Notable Parts

Orange Wheel Hard Plastic Large (54mm D. x 30mm) (3x) $0.75

Trans-Dark Blue Cone 1 x 1 [No Top Groove] (4x) $0.60

White Technic Steering Pulley Large (2x) $0.50

Est. BrickLink Part Value

$1.85

💡 MOC Potential

🚗 Futuristic off-road vehicles

🤖 Small support robots for larger Mars bases

🚀 Launch platforms for smaller rockets

Community Insights

Real opinions from Reddit and YouTube

What Reddit Says

No Reddit discussions found for this set.

What YouTubers Say

Searching for YouTube reviews...

This may take a moment

Inventory Statistics

Unique Parts

Total Pieces

Minifigures

Inventory Version: 1

Mars exploration awaits!
Blast off with the MT-31 Trike!

MT-31 Trike

📝 Our Take

Ask BlockTalk about this set

🧱 Building Experience

📈 Investment Analysis

⚖ Compare Similar Sets

2 Minifigures Included

📦 Full Parts Inventory - 48 unique parts • 85 total pieces

🛒 Where to Buy

💎 Notable Parts

💡 MOC Potential

📰 Mars Mission News

Random set of the day: MX-71 Recon Dropship

Classic Comebacks II: 12 More LEGO Characters Ready for a CMF Remake

MT-31 Trike News (1)

Random set of the day: MX-71 Recon Dropship

Community Insights

What Reddit Says

What YouTubers Say

Inventory Statistics

Mars exploration awaits!Blast off with the MT-31 Trike!

MT-31 Trike

📝 Our Take

Ask BlockTalk about this set

🧱 Building Experience

📈 Investment Analysis

⚖ Compare Similar Sets

2 Minifigures Included

📦 Full Parts Inventory - 48 unique parts • 85 total pieces

🛒 Where to Buy

💎 Notable Parts

💡 MOC Potential

Related Articles

LEGO 2026 Releases: Full Calendar + Pokémon Launch Date (Updated Weekly)

Best LEGO Christmas Gifts 2025 (Updated Dec) - 18 Sets Still In Stock

LEGO Black Friday 2025: Official Dates & Best Early Deals to Grab Now

📰 Mars Mission News

Random set of the day: MX-71 Recon Dropship

Classic Comebacks II: 12 More LEGO Characters Ready for a CMF Remake

MT-31 Trike News (1)

Random set of the day: MX-71 Recon Dropship

Community Insights

What Reddit Says

What YouTubers Say

Inventory Statistics

We value your privacy

Mars exploration awaits!
Blast off with the MT-31 Trike!