Almost every four- and six-cylinder car, crossover and small SUV has a gas engine under 4 liters, so a pack rated for 4 to 7 liters covers it with room to spare. These are the smallest and cheapest jump starters, light enough to live in a glove box. If you drive a diesel, or park outside through hard winters, look at the truck tier instead.
Prices were last checked October 22, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Full ranking 5
- AstroAI S8#1 of 5Full review
A tiny, cheap starter for four- and six-cylinder cars. Fine as a glovebox backup, but not for trucks or V8s.
Amazon $42.19$42.196 L29.6Yes0.9 lb - AstroAI S8 Air#2 of 5Full review
A combined jump starter and tire inflator for small and mid-size cars. Good for drivers who want one compact roadside kit, not for trucks.
Amazon $59.99$59.996 L--2.4 lb - Fanttik Potent T10#3 of 5Full review
A stylish, very compact pack for cars and small SUVs up to 7 liters that doubles as a phone charger. Pick it for portability, not for big trucks or deep cold.
Amazon $89.99$89.997 L44.4Yes1.3 lb - NOCO Boost Plus GB40#4 of 5Full review
For drivers of four- and six-cylinder cars who want a proven, compact pack to keep in the car. Owners of bigger engines should step up to a GBX55 or larger.
Amazon $99.95$99.956 L24Yes2.5 lb - NOCO Boost X GBX45#5 of 5Full review
For car and small-SUV owners who want a compact pack that refills fast from any USB-C charger. It costs a little more than the GB40 but recharges several times faster.
Amazon $124.95$124.956.5 L31Yes2.2 lb
