Beetle Adventure Racing
Cheat Menu
Go to 1 player mode and select "Championship". Race on Coventry Cove and find the shortcut with the barn and 2 haypiles. Run straight into the the haypile closest to the road and you should hit a box. You will here someone say "Groovy!" if you hit it. Finish the race and go to "Options". There will be an option called "Cheats" now.
Credit Goes To: Kevin Mitchell via IGN 64

 Cheat Menu
 Get the Alien Beetle
 Get the Police Beetle
 Make Cars Pull Over
 Open Up Battle

 Unlock New Cars
Number of Beetles - To get the daisy box in sunset sands right when you start off take right up the hill and keep going until you jump. Over the jump there is the daisy box to access How Many Beetle You want in Battle Mode.

Battle Mode Health Code - In Mount Mahyem, drive untill you first reach the snow. Jump off the first ramp then follow the path straight. When you get to the jump to go down to the normal route, turn left off it and try to land on the big snow area. Turn around and drive up, look for a box and hit it.

VIEW MODE - To activate the "VIEW MODE" cheat on the cheat menu, go to Inferno Isle. in the area that looks like a village, on the right side of the road is a house with a flat-looking roof. jump your beetle at an angle and land on the roof. then go into reverse and break the Daisy Crate hidden there to activate the View Mode cheat under options. you will be able to select Normal, Fisheye and Tunnel view modes.

TIME LIMIT - First select Championship and select any circuit. Make your way to Inferno Isle. At the end of the race, when you are at the village during the lava flow, look for a house near the finish line. Crash through the house to hit the Flower Box. You will hear the announcer say groovy. Finish the race, and now you have you can set a time limit of 1-6 minutes for the Beetle Battle.

COLOR CHANGE - Start a championship on any circuit. Make your way to Mount. Mayhem. As soon as you reach the grassy area at the end (staying on the path) of the tunnel, turn right. Look near the tree, and you will see the Flower Box. This lets your car, and the computer's, to change colors during the race.

? MODE - Start a championship, and select any circuit. When racing in Coventry Cove, take the jump to Stone Henge, right after the tunnel after the barn. Stop in the middle of Stone Henge. Now drive along the coast, looking behind the stones. You should spot the Flower Box. Now finish the race. Now you can control what comes out of the ? Boxes in Beetle Battle.

TRACK MUSIC - Select championship, and choose any circuit. When racing on Mount. Mayhem, look for the opening to the REALLY deep cave. Instead of going in through the bottom entrance, steer to the left, and jump through the top. You should land on an upper floor. (I can only reach this with the ALien Beetle). When the tunnel forks off, turn the right (the one that goes up). After crossing the bridge, make a sharp left, and the flower box is stuck in the snow near the bridge. Now you edit the music played when racing to Normal or Random.

LADYBUG COLOR CHANGE - Select championship, and choose any circuit. When racing on Inferno Isle, turn to the right before entering the T-Rex compound. Follow the muddy path and then turn left on to the dock. Use the ramp on the dock to land on the house/island in the middle. Look through the rubble, and you will find the Flower Box. Finish the race. Now you can control how fast the Ladybugs change during a Beetle Battle. You can select between: Normal, Slow, Fast, and Insane (which is very annoying).

HANDICAP - TWO PLAYER - Select championship, and select any circuit. When racing on Coventry Cove, make your way the the big junction where the draw bridge, crane, warehouse, and train tracks are. After crossing the river, turn around and look for the gray fence. Drive along the fence, and you will come a cross a whole in it. Enter the hole, and inside the fenced area, you will find a Flower Box. Now you can control the handicap for 2P races. You can choose between: Off, Normal, Slow, Fast, and Insane.

HANDBRAKE POWER - Select championship, and select any circuit except for novice. When racing on Sunset Sands, turn left at the first big pillar in the dunes. You should now be in a road which jumps onto a sand mound which jumps into the top of the big temple. Do not go into the temple yet. Before you actually go inside, explore the "patio" of the temple. You should find a Flower Box in a far corner. Now you can control how powerful the hand brake is. You can select from: Normal, High, and Insane.

NO MAP IN MULTIPLAYER - On the Conventry Cove stage, the area where you there are arrows pointing right. Hang a quick left and you will jump and grab a box worth five points. Your car will then land on an island with stone fixtures. Up ahead you can see a ramp with a box worth two points. Behind the fixture on the left,(if you're going too fast you will miss it)you will find a flower box. Crash through the flower box and make your way to the end of the stage to unlock the code to turn off the map in battle mode.
Credit Goes To: Anonymous & Skater886 and & Jomue via N64cc & IGN 64

Get The Alien Beetle
To get the "I come in peace" Alien Beetle, beat the Expert Championship. Once you have completed Metro Madness, you will receive the super-fast rainbow-colored beetle.
Credit Goes To: Amana Man via IGN 64

Get The Police Beetle
In a nod to the Need for Speed franchise, EA has included a hidden Police Beetle in Beetle Adventure Racing -- but you'll have to work hard to get it. After beating the standard Championships, a new "Bonus" mode will open up. Beat this tough challenge (including Wicked Woods) to get the fastest car in the game, the Police Beetle.
Credit Goes To: Kicked Yellow Mouse via IGN 64

Make Cars Pull Over
Beetle Adventure Racing's computer drivers may take shortcuts and crash into you, but they're still law-abiding drivers. Once you have unlocked the Police Beetle, hold down the left C Button to sound your siren. If you get close, the other drivers will pull over to the side and stop their cars.
Credit Goes To: That Darn Cat via IGN 64

Open Up Battle Stages
Most of the game's Beetle Battle stages are hidden and have to be unlocked before you can square off against your friends.
In order to get them, you need to enter the Championship mode and try to smash all the bonus boxes on the respective tracks. You have to collect all 100 points to unlock a new battle stage. All the battle stages are directly based on their track counterparts. Note that it is not necessary that you come in first in the races, but your points are not counted if you are disqualified.
Tip: Use the Police Beetle to get the tracks. It's fast -- and you can force cars to pull over and take your time to collect the boxes.

Unlock New Cars
To unlock variations of the New Beetle, such as the Racing Beetle, 4x4 Beetle and "Number 8," simply beat the Championship Mode on Novice and Advanced. Beat the following two difficulty modes for the two bonus cars.
Credit Goes To: Scott Allen via IGN 64