LEGO® Technic 42137 Formula E® Porsche 99X Electric

Current best price

Market value (new, sealed) on November 6, 2026: $42.20 – 16% below RRP ($49.99).

LEGO 42137 is currently available from $39.95 incl. shipping at Walmart.com. 20% below RRP ($49.99). Only one retailer in our comparison stocks it.

Updated November 6, 2026 at 7:00 AM EST

LEGO 42137 price comparison: where is it cheapest?

Prices incl. shipping to the US ·

Brickfact may earn a commission when you buy through a merchant link. Commissions do not determine the order of offers. How Brickfact compares prices

iFurther information
The Lego set Formula E® Porsche 99X Electric with the set number 42137 is part of the LEGO Technic theme and is recommended for ages 9+. It was released in January 2022. The model has 422 pieces, and we estimate it takes around 1 hour to build. 358 Brickfact users have this set in their collection.
The set weighs about 0.785 kg. The box measures 15 x 10.3 x 2.8 in (38.2 x 26.2 x 7.1 cm). The recommended retail price is $49.99.
Our Brickfact Lego price comparison compares the prices of 1 shop for this set. It is currently cheapest at Walmart.com for $39.95 including shipping. That is $0.09 per piece. With this offer you save $10.04 off the recommended retail price, a discount of 20%.
The Part-Out-Value (POV) is the sum of the average prices paid on bricklink.com for all parts of this set. It is about $46.59. You save around $6.64 if you buy the complete set at Walmart.com instead of the individual parts on bricklink.com. The current best offer therefore has a POV rate of 1.17: the Part-Out-Value divided by the current best price on Brickfact.

Lego 42137 product data

Set Information

Set ID
42137
Theme
Pieces
422
Building Time
1 hour
Age Range
9+

Availability

Release
01/2022
Retiring Status
Retired (12/2023)

Price Information

RRP
$49.99
Insiders Points (for purchase at Lego)
325
Part Out Value
$46.59

Packaging

Weight
0.785 kg
Packaging dimensions
15 x 10.3 x 2.8 in
EAN (GTIN13)
5702017156156

Popularity with Brickfact users

users have this set
358
buyers in the last 12 months
22

358 Brickfact users have Formula E® Porsche 99X Electric in their collection. 22 users bought it in the last 12 months.

Based on anonymized Brickfact user collections; shown only for sets with at least 10 users. As of November 6, 2026.

LEGO 42137 price trend

Average sale price on secondary marketplaces – not the new price at retailers.

Current market value
$42.20
Growth vs. RRP
−15.6 % $49.99
Range
$38.11 – $43.77
Average
$40.14

Loading price history…

LEGO 42137 price history: how has the price changed?

Brickfact has been recording retailer prices since 10/12/2026. Best price so far: $39.95 (25 days ago).

Current best price
$39.95 -20% vs. RRP
Best price since 10/12/2026
$39.95 -20% vs. RRP · 25 days ago

Daily lowest prices at the tracked shops, including shipping. Gaps indicate days with no recorded price. The table lists each shop’s lowest price.

Lowest price per retailer (since 10/12/2026)

RetailerCurrentLowest priceDate
Walmart.com LogoWalmart.com$39.95$39.9511/06/26

Lowest price per day that Brickfact recorded at the retailers in the price comparison, including shipping where known – as in the comparison above. Amazon offers are not included in the price history.

Official Set Description for LEGO 42137 Formula E® Porsche 99X Electric

Discover a top gift for Formula E® racing and Porsche fans aged 9+ with this fast-paced LEGO® Technic™ Formula E® Porsche 99X Electric (42137) pull-back race car toy. Kids enjoy an immersive build, crafting all the details of the Porsche race car, then recreate all the action of a real race day using the 2 pull-back motors and LEGO Technic AR app.

Bring the race to life
Using augmented reality, the app lets kids immerse themselves in the role of a top Porsche Formula E driver. They’ll choose which circuit to race on, make decisions about energy management and use their skills to work their way up in the race. Using the 2 pull-back motors, kids will decide how much to charge the car’s energy before pushing the trigger to see the car race along the AR track right in front of them!

A great introduction to engineering
LEGO Technic building sets feature realistic movement and mechanisms that introduce LEGO builders to the universe of engineering in an approachable and realistic way.

  • Build a Formula E® racing icon – Motorsport fans will love building this LEGO® Technic™ Formula E® Porsche 99X Electric (42137) set
  • Augmented reality – Download the LEGO® Technic™ AR app to scan the model. Then use the pull-back function to launch the car using your foot and see it come to life in exciting races
  • Pull-back function – Using the 2 pull-back motors, kids can judge how much energy to put into the car toy before making the perfect start to the race using the trigger
  • A coolway to play – The pull-back function combines with the LEGO® Technic™ AR app. After scanning the car in the app, pull it back by hand then use your foot to launch the car and watch the result
  • Authentic design – This buildable model Porsche is an authentic model replica of the real-life Formula E® Porsche race car, complete with sponsor logos
  • Ideal for any Formula E® racing fan aged 9+ – This Porsche building set makes a top gift for kids who love Porsche race cars, Formula E or AR toys
  • Perfect size for play – This Porsche pull-back race car toy for kids measures over 2 in. (6 cm) high, 12 in. (31 cm) long and 4.5 in. (12 cm) wide
  • Learn through play – The LEGO® Technic™ universe offers advanced building sets for LEGO fans who are ready for their next building challenge
  • High quality standards – LEGO® Technic™ components meet rigorous industry standards to ensure they are consistent, compatible and connect reliably every time
  • Tested to the max – LEGO® Technic™ components are dropped, heated, crushed, twisted and analyzed to make sure they meet strict global safety standards

Building Instruction for LEGO 42137 Formula E® Porsche 99X Electric

LEGO 42137 Frequently Asked Questions

How much does LEGO 42137 Formula E® Porsche 99X Electric cost?
On November 6, 2026, the lowest price in the Brickfact price comparison is $39.95 incl. shipping at Walmart.com. That is 20% below the RRP of $49.99.
Where can I buy LEGO 42137 cheapest?
Only one retailer in the Brickfact price comparison currently stocks LEGO 42137: Walmart.com ($39.95).
Is LEGO 42137 still available?
LEGO has retired 42137 Formula E® Porsche 99X Electric. New copies are still available at 1 retailers in our price comparison while stocks last.
What age is the LEGO Technic Formula E Porsche 99X Electric set suitable for?
The LEGO Technic Formula E Porsche 99X Electric set is suitable for children aged 9 and above.
How can kids recreate the action of a real race day with this set?
Kids can recreate the action of a real race day with the LEGO Technic Formula E Porsche 99X Electric set by using the 2 pull-back motors and the LEGO Technic AR app.
What is the size of the Porsche pull-back race car toy in this set?
The Porsche pull-back race car toy in this set measures over 2 inches (6 cm) high, 12 inches (31 cm) long, and 4.5 inches (12 cm) wide.
Can the LEGO Technic Formula E Porsche 99X Electric set be used with augmented reality?
Yes, the LEGO Technic Formula E Porsche 99X Electric set can be used with augmented reality. By downloading the LEGO Technic AR app, kids can scan the model and experience exciting races on their device.
When was LEGO 42137 cheapest?
Since tracking began on 10/12/2026, the lowest shop price recorded by Brickfact for LEGO 42137 was $39.95 on 10/12/2026 at Walmart.com, including shipping. Amazon prices are not included.
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