Spin a Car Upgrade Tier List — Best Upgrades Ranked
Upgrades in Spin a Car are permanent account-wide boosts that improve your earning potential, rolling luck, racing performance, and idle income. With over a dozen upgrades available and a limited supply of coins to invest, knowing which ones to prioritize is critical. This tier list ranks every upgrade from S to C based on return on investment (ROI), impact on gameplay, and synergy with the current meta.
How This Upgrade Tier List Is Evaluated
Unlike car tiers, which are based on raw performance, upgrade tiers are based on:
- ROI Speed — How quickly the upgrade pays for itself in additional earnings.
- Scalability — Whether the upgrade becomes more valuable at higher levels or hits diminishing returns early.
- Universal Applicability — Whether the upgrade helps in all game modes or only one.
- Meta Relevance — Whether the upgrade synergizes with the current top strategies (e.g., rolling for legendaries with Luck Boost).
S Tier — Upgrade First, Always
These upgrades provide the highest return on investment and should be leveled as early and as high as possible. Every coin spent here multiplies your future earning power.
Luck Boost
- Max Level: 10
- Cost per Level: 150 / 300 / 500 / 750 / 1,000 / 1,400 / 1,900 / 2,500 / 3,200 / 4,000
- Effect: +5% luck per level (cumulative, up to +50% at max)
- Why S Tier: Luck Boost directly increases your probability of rolling rare, epic, and legendary cars. At max level, your legendary pull rate increases from 0.8% to approximately 1.4%, which sounds small but means you need roughly 30% fewer rolls to hit a legendary. Over the course of the game, this saves thousands of coins. Luck Boost is the single most impactful upgrade for long-term progression because better cars accelerate everything else.
Recommended Priority: Max this as fast as possible. Even early-game players should push Luck Boost to level 5 before investing in any other upgrade below A tier. The compounding value of pulling an epic or legendary earlier than you otherwise would is enormous.
Cash Multiplier
- Max Level: 10
- Cost per Level: 200 / 400 / 650 / 950 / 1,300 / 1,750 / 2,300 / 3,000 / 3,800 / 5,000
- Effect: +10% cash from all sources per level (cumulative, up to +100% / 2x at max)
- Why S Tier: Cash Multiplier doubles your income at max level. Every race reward, idle collection, and bonus is increased. This upgrade has no situational dependency — it works in every mode, with every car, on every track. The ROI is straightforward: at level 5, you earn 50% more, which means every future upgrade you buy is effectively 50% cheaper in real terms because you earn coins 50% faster.
Recommended Priority: Alternate between Luck Boost and Cash Multiplier. Level Luck Boost first if you still need epics/legendaries; level Cash Multiplier first if your garage is already strong and you want to accelerate earnings.
A Tier — Strong Investments
A-tier upgrades are excellent and should be leveled after S-tier upgrades are at least halfway maxed. They provide significant value but are either mode-specific or have diminishing returns.
Gasoline Refill
- Max Level: 8
- Cost per Level: 100 / 250 / 450 / 700 / 1,000 / 1,400 / 1,900 / 2,500
- Effect: Reduces Gasoline refill time by 8% per level (cumulative, up to 64% reduction at max)
- Why A Tier: Gasoline is the resource that gates active racing. Without Gasoline, you cannot race, which means no race rewards, no coin bonuses, and no active earning. Gasoline Refill lets you race more frequently, which directly translates to more income. At max level, your Gasoline recovery time is reduced by 64%, effectively giving you nearly 3x the racing sessions over the same time period.
The reason it is A instead of S is that it only benefits active racing. Players who focus on idle or rolling get less value here. Additionally, once you have enough Gasoline capacity and refill speed to race continuously during your play sessions, additional levels have diminishing practical returns.
Recommended Priority: Level 3-4 early for a noticeable quality-of-life improvement. Push to max only if you race actively and find yourself waiting for Gasoline frequently.
Offline Earnings
- Max Level: 10
- Cost per Level: 250 / 500 / 800 / 1,200 / 1,700 / 2,300 / 3,000 / 3,800 / 4,700 / 6,000
- Effect: +15% offline earnings per level (cumulative, up to +150% at max)
- Why A Tier: Offline Earnings determines how much you earn while the game is closed. For players who check in 2-3 times per day rather than playing continuously, this upgrade is the primary income driver. At max level, your 8-hour offline collection is 2.5x what it would be at base.
It sits in A tier because its value depends on your play pattern. If you play actively for hours at a time, Offline Earnings contributes relatively little to your total income. If you log in twice daily for 10 minutes each, it is arguably more important than Cash Multiplier for your situation.
Recommended Priority: Mid-game players who cannot play continuously should push this to level 5-6 alongside Cash Multiplier. Active players can afford to delay it.
B Tier — Useful but Situational
B-tier upgrades provide value but are either less impactful or more niche than the higher tiers. Invest in these after S and A tiers are well-progressed.
Car Storage
- Max Level: 5
- Cost per Level: 300 / 600 / 1,000 / 1,600 / 2,400
- Effect: +1 garage slot per level (up to 5 additional slots)
- Why B Tier: Extra garage slots let you keep more cars active simultaneously, which matters for players who want to run one car in idle mode, one for rolling, and one for racing without constantly swapping. However, the game allows free swapping between races, so the practical benefit is convenience rather than raw earning power. At early levels, the default slots are sufficient for most strategies.
Recommended Priority: Level 2-3 when you have 4+ cars worth using and the constant swapping becomes tedious. Not a priority before mid-game.
Coin Potion Boost
- Max Level: 8
- Cost per Level: 200 / 400 / 650 / 950 / 1,300 / 1,750 / 2,300 / 3,000
- Effect: +12% coin potion duration per level (cumulative, up to +96% duration at max)
- Why B Tier: Coin Potions are consumable items that temporarily double your coin earnings. Extending their duration sounds powerful, but Potions themselves are relatively rare drops. You cannot rely on having Potions available consistently, which makes investing heavily in this upgrade feel premature until you have a reliable Potion income stream. At max level, when you do use a Potion, it lasts nearly twice as long — that is good, but it is conditional on having Potions to use.
Recommended Priority: Level 2-3 for moderate benefit. Only push to max if you regularly acquire Potions from events or race rewards and want to squeeze maximum value from each one.
Speed Boost
- Max Level: 6
- Cost per Level: 400 / 800 / 1,300 / 1,900 / 2,600 / 3,500
- Effect: +3% car top speed per level during races (cumulative, up to +18% at max)
- Why B Tier: Speed Boost is straightforward — faster cars finish races quicker, which means more races per session and higher earnings. However, the 3% per level is applied to base speed, which means the absolute improvement is small for slow cars and moderate for fast ones. At max level, Phoenix GT gets +17.6 top speed, which is significant, but the cost of maxing Speed Boost (10,500 coins total) is steep relative to the benefit. You get more total value from Cash Multiplier at a similar investment level.
Recommended Priority: Level 2-3 for a noticeable racing improvement. Max only after Cash Multiplier and Luck Boost are done.
C Tier — Low Priority
These upgrades are either poorly tuned, overpriced, or provide minimal benefit relative to their cost.
Handling Boost
- Max Level: 6
- Cost per Level: 400 / 800 / 1,300 / 1,900 / 2,600 / 3,500
- Effect: +3% car handling per level (cumulative, up to +18% at max)
- Why C Tier: Handling Boost shares the same cost curve as Speed Boost but is less universally useful. Handling only matters on corner-heavy tracks, and the cars that need handling help the most (high-speed, low-handling cars like Turbo Venom) still cannot match dedicated handling cars like Shadow Drift even with max Handling Boost. Meanwhile, cars like Shadow Drift that already have great handling get minimal marginal benefit. The overlap with Speed Boost's cost and the limited scenarios where handling is the bottleneck make this a low-priority upgrade.
Recommended Priority: Level 1 for a tiny quality-of-life bump. Do not invest further until all other upgrades are progressed.
Lucky Streak
- Max Level: 5
- Cost per Level: 500 / 1,000 / 1,700 / 2,600 / 3,800
- Effect: After 5 consecutive rolls without a rare+, the next roll gets +20% luck per level (up to +100% at max)
- Why C Tier: Lucky Streak sounds like a bad-luck protection system, and it is — but the trigger condition (5 consecutive non-rare rolls) means it only activates after you have already spent coins on failed rolls. The bonus applies to only one roll, and even at max level, +100% luck on a single roll only brings the legendary probability from 0.8% to roughly 1.6%. Compare this to Luck Boost, which applies to every roll passively. Lucky Streak is a consolation mechanic disguised as an upgrade, and it costs more per level than Luck Boost at equivalent levels.
Recommended Priority: Skip entirely until every other upgrade is at least level 3.
Upgrade Priority Roadmap
Here is a recommended leveling order based on game stage:
Early Game (First 5,000 coins earned)
- Luck Boost → Level 3 (450 coins) — Immediately improves rolling odds
- Cash Multiplier → Level 2 (600 coins) — Boosts all income
- Gasoline Refill → Level 2 (350 coins) — More racing sessions
- Luck Boost → Level 5 (1,700 coins additional) — Push toward better pulls
- Cash Multiplier → Level 4 (1,200 coins additional) — Compound the income growth
Mid Game (5,000-25,000 coins earned)
- Cash Multiplier → Level 7 — Strong income multiplier
- Luck Boost → Level 8 — Nearly maxed luck for rolling
- Offline Earnings → Level 5 — For players who idle regularly
- Gasoline Refill → Level 5 — Sufficient for continuous racing
- Car Storage → Level 2 — If you have 4+ useful cars
Late Game (25,000+ coins earned)
- Max Luck Boost and Cash Multiplier — These are always the top priorities
- Offline Earnings → Level 8-10 — For full idle optimization
- Speed Boost → Level 4-6 — Racing performance optimization
- Coin Potion Boost → Level 5+ — If you have reliable Potion income
- Everything else — Fill in remaining levels as coins allow
Frequently Asked Questions
This section covers the most common questions about upgrade strategy in Spin a Car, including how to balance competing priorities, whether idle-focused players should deviate from the standard roadmap, and how the upgrade cost curve shapes long-term planning.
Should I max Luck Boost before touching any other upgrade?
Not necessarily. Luck Boost to level 3-5 is a great early investment, but Cash Multiplier at level 2-3 compounds your income and makes future upgrades cheaper in real terms. A balanced approach (Luck Boost 5 + Cash Multiplier 4) is generally more efficient than maxing one first.
Is Offline Earnings better than Cash Multiplier for idle players?
For players who are offline 18+ hours per day, Offline Earnings at level 5+ may contribute more total income than Cash Multiplier at the same level. However, Cash Multiplier also boosts your active earnings and race rewards, which Offline Earnings does not. For most players, Cash Multiplier remains the better all-around investment.
How many coins does it cost to max all upgrades?
The total cost to max every upgrade in the game is approximately 92,000 coins. This is achievable within 2-3 months of active play for a mid-to-late game player with S/A-tier cars and good upgrade progression.
Does Lucky Streak stack with Luck Boost?
Yes, Lucky Streak's conditional bonus stacks additively with Luck Boost's passive bonus. However, even with both at max level during a Lucky Streak trigger, the total bonus is +150% luck on one roll — which is still less impactful than Luck Boost's consistent +50% on every roll.